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Xi'an Tian Guangyuan Biotech Co., Ltd. [Shaanxi,China] Business Type:Manufacturer , Trade Company Main Markets: Americas , Europe , Worldwide Exporter:91% - 100% Certs:HACCP, ISO9001, FDA
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Xi'an Tian Guangyuan Biotech Co., Ltd.

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  • 2023-01-28
    Is Nattokinase Good For Blood Pressure?
    1. Nattokinase - source and application history Natto is an ancient traditional food, which originated in the Qin and Han Dynasties of China. It was introduced into Japan by Zen monks in the Tang Dynasty, and has a history of more than 1000 years. Natto is a traditional fermented soybean product in Japan. It is made of fermented soybeans fermented and cooked by Bacillus natto at a certain temperature and humidity. It has been used as the main food in Japan for more than 2000 years and has been used as both medicine and food in the folk. The mature natto is golden in color, covered with a layer of viscous substances on the surface, and there is a long drawn-like substance of Chemicalbook when it is lifted. Natto has unique flavor, rich nutrition and multiple health functions. It is known as "super healthy food" and is deeply loved by the Japanese people. At present, natto has become a popular health food in Japan, Canada, the United States and some European countries, and some enterprises in China have begun to produce and sell it. During the fermentation of natto, natto bacteria produce a serine protease (natto kinase). 2. Nattokinase Powder Function Nattokinase has the effect of promoting human detoxification metabolism, dissolving thrombus, reducing blood lipids and blood sugar, and clearing the intestines. If taken correctly, it can effectively d
  • 2023-01-12
    Do Soy isoflavones increase estrogen?
    1. What is Soy isoflavones Powder? Soybean isoflavone is a kind of flavonoids, a kind of secondary metabolites formed during the growth of soybean, and a kind of bioactive substance. Because it is extracted from plants and has a similar structure with estrogen, soybean isoflavones are also called phytoestrogens. The estrogen effect of soybean isoflavones affects hormone secretion, metabolic biological activity, protein synthesis and growth factor activity, and is a natural cancer chemopreventive agent. 2. Soy isoflavone source Soy Isoflavone is a phytochemical, belonging to plant flavonoids, mainly from legumes of leguminous plants. The content of soybean is relatively high, 0.1% - 0.5%. It mainly refers to compounds with 3-benzopyranone as the parent nucleus. 3. Soy isoflavone Function (1)Soybean isoflavones can prevent cardiovascular diseases Soybean isoflavones can reduce the concentration of total cholesterol in blood and reduce the incidence rate of heart disease. It is mainly manifested in reducing the level of free radicals in liver and myocardium, increasing the activity of liver superoxide dis
  • 2023-01-04
    Does Ginkgo Biliba Extract Affect Blood Pressure?
    1. What is Ginkgo Biliba Extract? Ginkgo Biloba Extract (GBE) refers to effective substances extracted from ginkgo biloba, containing total ginkgo flavonoids, ginkgolides and other substances. It can dilate blood vessels, protect vascular endothelial tissue, regulate blood lipids, protect low density lipoprotein, inhibit PAF (platelet activating factor), inhibit thrombosis, and remove free radicals. Introduction: Chinese name: Ginkgo Biloba Extract (GBE) English name: Ginkgo biloba P.E. Plant source: Dried leaves of Ginkgo bilobaL.
  • 2022-12-26
    Does genistein Powder lower estrogen?
    Genistein is light yellow crystalline powder; It has the properties of estrogen and anti estrogen, has antioxidant effect, can inhibit the activity of tyrosine protein kinase (PTK), can inhibit the activity of topoisomerase II, has the functions of inducing programmed cell death, improving anti-cancer efficacy, inhibiting angiogenesis, etc. It is a potential cancer chemopreventive agent, and its anti-cancer effect and mechanism have broad application prospects. Genistein, also known as genistein, is a polyphenol compound found in plants such as soybean and red clover, with a molecular structure similar to 17 β- Estradiol, with antioxidation and high affinity for estrogen receptor, can inhibit the activities of tyrosine protein kinase (PTK) and topoisomerase II, and has the effects of inducing programmed cell death, improving anti-cancer efficacy, inhibiting angiogenesis, etc. It is a type of flavonoids (also called isoflavones). It is often found together with isoflavones called daidzein, which are called soybean isoflavones. The benefits of these compounds on human health have been widely studied, and they are potential cancer chemopreventive agents, which have significant effects on the prevention of cancer and other diseases. Genistein is the main phytoestrogen studied at present.
  • 2022-12-14
    What does L-theanine do to your brain?
    L-Theanine Powder is an amino acid found only in tea, which contains the most of it. L-theanine is synthesized in the root of tea tree, transferred to the leaves through the branches and accumulated in the leaves. Under sunlight, theanine will be transformed into catechic acid. Therefore, the content of L-theanine is higher in high-grade green tea cultivated under light, but less in ordinary crude tea, and the content of polyphenols is increased. L-Theanine is the characteristic amino acid in tea. It is synthesized in the root of tea tree by glutamic acid and ethylamine under the action of theanine synthase. It is an important substance for forming the taste of tea. 26 kinds of amino acids (6 kinds of non-protein amino acids) were identified in tea, which generally accounted for 1%-5% of the dry weight of tea, and theanine accounted for more than 50% of the total free amino acids in tea. Amino acids of tea plant refer to all 26 amino acids contained in tea, of which 20 are amino acids related to protein, called protein amino acids; There are also six amino acids that have nothing to do with protein synthesis, which we cal
  • 2022-12-09
    Is Phytosterol Powder good for kidneys?
    1. What is Phytosterol Powder? Sterol is a kind of steroid existing in nature. although its content is not much, it has high application value. It is also called sterol because of its solid state. It belongs to macromolecular alcohols. It is the main component of unsaponifiable substances in oil and fat. According to different sources, sterols can be divided into three categories, namely animal sterols, plant sterols and mycosterols. Phytosterol (sitosterol) is considered as a mild free radical scavenger, which to some extent explains the positive role of phytosterol in maintaining the stability of cell membrane, inhibiting inflammation, preventing atherosclerosis and anti-cancer. Anti inflammatory and immunoregulatory effects Phytosterol has anti-inflammatory, anti infective and inhibitory effects on bacterial and fungal reproduction. Its anti-inflammatory effect is also one of the functions that have been discovered earlier. 2. Application Phytosterol has a wide range of biological functions in medicine and food science. In animal production, scientific use of phytosterol can promote animal growth, improve body health, improve the quality of animal products, and has a positive role in reducing breeding costs and improving economic benefits. As a functional
  • 2022-12-01
    Glycolic Acid Can Be Used In Many Fields
    1. What is Glycolic Acid Powder? Glycolic acid, also known as glycolic acid and glycolic acid, is also an important organic synthesis intermediate and chemical product, which is widely used in organic synthesis, cleaning, electroplating, textile, leather, sterilization and other industries. In recent years, scientific research has found that the polymer of glycolic acid is biodegradable, which solves the problem of difficult degradation of traditional plastic products and can be widely used in medicine, packaging and many other fields. 2. Glycolic Acid Powder Application Glycolic acid can be used to prepare high molecular weight polyglycolic acid. Although traditional polymer materials such as PET, PE, PP, PS, etc. have brought many conveniences to people's lives and played an important role in social and economic development, they have caused serious "white pollution" due to imperfect recycling and utilization, and they cannot or cannot be degraded in the earth's environment. With the increasing attention to environmental protection, various countries and regions have issued "plastic restriction orders" to develop biodegradable The substitution of environment-friendly polymer materials for traditional non degradable polymer materials has become an important research direction. 3.Glycolic Acid Purpose (1). It is an important chemical raw material, used as raw material for manufacturi
  • 2022-11-22
    Is The Vitamin Content of Seabuckthorn Fruit Powder Very High?
    1. What is Sea buckthorn Fruit Powder? Seabuckthorn fruit powder is a kind of product made by directly drying and pulverizing seabuckthorn fruit. It is a pure natural fruit powder without any addition. Hippophae rhamnoides is a precious economic forest tree with the most kinds of natural vitamins in the world, and its vitamin C content is far higher than that of fresh dates and kiwifruit, so it is known as the treasure house of natural vitamins. Each 100g of seabuckthorn juice contains C500mg-400mg of vitamin E, 50mg-400mg of vitamin E, 0.05mg-0.3mg of vitamin B1, 0.03 mg of vitamin B2, 0.15 g of g-Chemalbook, 0.2mg-0.88mg of vitamin B12, 115 of vitamin K compounds, and 20mg-350mg of vitamin P. Seabuckthorn has high nutritional value, ecological value and economic value. 2. Sea Buckthorn Powder Benefits (1). Seabuckthorn fruit powder has the effect of supplementing vitamins. Seabuckthorn fruit powder contains a variety of nutrients, so its nutritional value is very high. Seabuckthorn fruit powder contains natural vitamin C, protein and amino acid, vitamin E, vitamin Chemicalbook K, seabuckthorn polysacch
  • 2022-11-14
    What is the effect of sponge bone needle in cosmetics?
    1. What is sponge spicule Powder? Sponge microneedle (also known as sponge bone needle, INCI name: hydrolyzed sponge HYDROLYZED SPONGE) can naturally accelerate the metabolism of aging cuticle until natural and effective physical skin change, a natural plant product without knife, laser, strong acid or skin grinding. 2. What is the principle of sponge microneedle? The reason why sponge microneedles can quickly and efficiently improve skin problems is that many tiny needles on the microneedles can stimulate the skin. In a very short time, the microneedles can make more than millions of fine tubes, so that active ingredients can effectively penetrate into the skin, and when stimulating the regeneration of new cells, the nutrition of microneedles can be fully transformed into cellular active substances. So as to achieve the ideal effect of lightening wrinkles, whitening skin, lightening color spots, improving eye wrinkles, dark circles, tightening and improving facial skin tissue. At the same time, microneedles stimulate the dermis and promote collagen proliferation through the skin's self-healing ability.
  • 2022-11-03
    Supply High Quality Lanolin CAS 8006-54-0
    1. What is Lanolin? Lanolin is an ideal raw material for the production of skin care products such as cold cream, anti wrinkle cream, anti crack cream, shampoo, hair conditioner, hair cream, lipstick and high-grade soap. It is often used as water in oil emulsifier, and is an excellent moisturizing substance. Lanolin is a kind of product with good water absorption, moisturizing, lipophilic, emulsifying and dispersibility, which is widely used in cosmetics, medicine, leather, agriculture and other industries. 2. Flow Chart Preparation of crude lanolin product using wool washing sewage as raw material. The wool washing sewage is added with aluminum chloride to obtain the rotten mud containing lanolin. The water is absorbed to obtain the mud. Take 600kg of sludge, add 480kg of benzene, stir while adding, heat at 56 ℃ for 1h, stop stirring, precipitate for 1h, dissolve 6% - 40% lanolin in the clarified benzene solution, transfer it into the distillation tower, heat and distill until the lanolin content reaches 34%, cool to below 40 ℃, and discharge it to obtain crude lanolin. Wool washing sewage [AlCl3] → sludge [benzene, 30 ℃] → preparation of crude lanolin to neutralize benzene grease. Take 2100kg of crude lanolin and put it into a reaction pan, heat it to 50 ℃, then add about 50% (g/g) hot sulfuric acid solution to the crude lanolin, stir it for 45min, precipitate for half an hour, and then release the lower leg.
  • 2022-10-17
    Is Capsaicin Good for You?
    Is Capsaicin Good For You Capsaicin's anti-inflammatory qualities make it an effective supplement for promoting heart health. For example, a three-month study found that capsaicin significantly reduced the risk factors of heart disease in adults who had low HDL cholesterol (good cholesterol) levels. Is Capsaicin Good For Your Gut When capsaicin enters your digestive tract and attaches to the receptor, it creates a chemical called anandamide. Anandamide has been shown to lead to less inflammation in the gut, which can be caused by conditions such as ulcerative colitis and Crohn's disease.
  • 2022-10-08
    Alpha GPC 99% Powder 28319-77-9
    1. What is Alpha GPC Powder? Alpha GPC 99% Powder is a water-soluble small molecule that normally exists in the human body, and is the biosynthetic precursor of acetylcholine, an important neurotransmitter. The most important function of Alpha GPC is that the choline produced by it is a water-soluble vitamin B group, which has an important effect on the brain and nervous system. 2.Main Function *Strengthen memory *Enhance cognitive ability *Improve learning ability Alpha-GPC has the effect of helping to delay, stop or reverse Alzheimer's and dementia and other aging diseases that have deteriorated cognitive ability.
  • 2022-09-26
    Active ingredients of Leonurus japonicus extract ---- Stachydrine hydrochloride
    1. What is Stachydrine hydrochloride ( powder )? Stachydrine hydrochloride is an active ingredient extracted from the leaves of Leonurus heterophyllus. It can promote blood circulation, regulate menstruation, promote diuresis, reduce swelling, and shrink the uterus. 2. Stachydrine hydrochloride Powder benefits (1) Stachydrine hydrochloride can improve the nutritional blood flow of coronary artery and myocardium, reduce the necrosis of myocardial cells, reduce blood viscosity, reduce vascular resistance, improve microcirculation, slow down heart rate, reduce cardiac output, and resist platelet aggregation in myocardial ischemia caused by adrenaline. (2)Stachydrine hydrochloride powder can improve and increase the blood flow of the kidney, repair the glomerulus and tubules, and restore renal function. (3)Motherwort Extract can cause rhythmic contraction and excite the uterus, and inhibit the occurrence of breast cancer and myoadenosis. (4) Motherwort Herb Extract has the functions of expectorant, antitussive and relaxing bronchial smooth muscle (5) Leonurus japonicus extract can slow down the contraction frequency of frog heart, and reduce the bleeding rate and bleeding time for dogs and rabbits.
  • 2022-09-15
    TGY Factory Supply L-tyrosine Powder CAS 60-18-4
    1. L-Tyrosine is an aromatic amino acid that exists in various proteins, especially rich in dairy casein. Its molecules contain phenol groups.Soluble in water, ethanol, acid and alkali, insoluble in ether. Tyrosine is a nonessential amino acid and a raw material for many products of the body. Tyrosine can be converted into a variety of physiological substances in the body through different metabolic pathways, such as dopamine, epinephrine, thyroxine, melanin and papaverine of opium poppy (opium). These substances are closely related to nerve conduction and metabolic regulation and control. Studying tyrosine metabolism is helpful to understand the pathological process of some diseases. For example, uric acid melanosis is related to tyrosine metabolism disorder. The lack of urinary acid oxidase in the patient's body causes that the metabolite of tyrosine, uric acid, cannot continue to be decomposed. The excretion from urine is oxidized into black substances when exposed to air. The diapers of children with this disease will gradually become black when exposed to air, and this urine will also become black after a long time. Albinism is also related to the metabolism of tyrosine. The patients lack tyrosinase, so that 3,4-dihydroxyphenylalanine, the metabolite of tyrosine, cannot form melanin, so that the hair and skin are white. 2.L-Tyrosine Powder benefits (1). If patients with vitiligo eat food containing tyrosine, it can promote the formation of melanin, and then play a role in reducing the sy
  • 2022-09-09
    How about the antioxidant capacity of pterostilbene powder?
    Antioxidant effect of pterostachys rosewood Pterostilbene and resveratrol have similar antioxidant potential. 1. What is Pterostilbene? Pterostilbene is a chemical component contained in pterostilbene, but scientists have also found pterostilbene in other plants one after another. Pterostilbene is a white or quasi white powder crystal with rich medicinal value. It belongs to the antifungal active ingredient in dragon's blood products and has a certain effect on the treatment of cancer, hypertension and hyperlipidemia. Recently, researchers have mastered the industrial synthesis method of pterostilbene. Pterostilbene is an antifungal active ingredient in dragon's blood products. It is a polyhydroxystilbene compound and a homologue of resveratrol. In addition to being partially similar to resveratrol, pterostilbene also has strong antifungal activity (its antifungal activity is five times that of resveratrol). Pterostilbene helps prevent the damage caused to the body in the early stage of cancer. As an antioxidant and anti-inflammatory agent, it is found in blueberries and blackberries. 2. Pterostilbene function (1). Pt
  • 2022-09-01
    L-arginine Powder is an essential amino acid for infant growth and development
    1. What is L-arginine Powder? L-arginine is a coding amino acid in protein synthesis and belongs to one of the eight essential amino acids for human body. The body needs it to perform many functions. For example, it stimulates the human body to release specific chemicals, such as insulin and human growth hormone. This amino acid also helps to remove ammonia from the body and promotes wound healing. The body also needs it to produce sarcosine. Nitric oxide is produced when L-arginine is decomposed, so it can expand vascular disease and increase blood flow. Under normal circumstances, the body itself can produce enough L-arginine. However, when it is insufficient, it can be supplemented by eating foods rich in arginine. L-arginine can be found in any food containing protein, such as meat, poultry, cheese products, fish, etc. Foods rich in arginine include almonds, walnuts, dried sunflower kernels, dark chocolate, chickpeas, melons, peanuts, raw lentils, hazelnuts, Brazil nuts, red meat (moderate), cashew nuts, salmon, pistachios, soybeans and walnuts. 2.Purpose (1).Nutritional supplements; Seasoning. (2)Special flavor substances can be obtained by heating reaction (amino carbonyl reaction) with sugar. (3)It is an important component of amino acid infusion and comprehensive amino acid preparation.
  • 2022-09-01
    Amino acids necessary for maintaining normal nitrogen balance ----- L-Leucine Powder
    1. What is L-Leucine powder? L-leucine, also known as lysine, is α- Amino- γ- Methylvaleric acid α- Amino isohexanoic acid, crystallized from the acid hydrolysate of muscle and wool, is named leucine. L-leucine is one of the eight essential amino acids for the human body, belonging to the aliphatic amino acids within the 20 protein amino acids. It is called three branched chain amino acids together with L-isoleucine and L-valine in the chemicalbook. It is an enantiomer with D-leucine and is a white shiny hexahedral crystal or white crystalline powder at room temperature. Odorless, slightly bitter. L-leucine can promote insulin secretion and reduce blood sugar; Promote sleep, reduce sensitivity to pain, relieve migraine, ease anxiety and tension, reduce symptoms of chemical reaction disorder in human body caused by alcohol, and help control alcoholism; It can not only cure dizziness, but also promote the healing of skin wounds and bones. Therefore, doctors usually recommend patients to take leucine supplements after surgery. Often prepare amino acid infusion and comprehensive amino acid preparation for treatment or health care; It can also be used as food, cosmetics and feed additives. Plant growth promoter. The best food sources of leucine include brown rice, beans, meat, nuts, soybean meal, and whole wheat.
  • 2022-08-24
    A blue natural food pigment --- Phycocyanin
    1. What is Phycocyanin? Phycocyanin is a dark blue powder isolated from Spirulina. It mainly exists in cyanobacteria, red algae and cryptoalgae. Phycocyanin is also generally divided into C-phycocyanin and r-phycocyanin. The former mainly exists in cyanobacteria, while the latter mainly exists in red algae. There are both kinds of cyanobacteria. Its function is to absorb light (orange yellow) energy and transmit light energy. It is not only a protein, but also an excellent natural food pigment, and also a good health food. Phycocyanin is one of the rare pigment proteins in nature. It is not only bright in color, but also a nutrient rich protein with complete amino acid composition and high content of essential amino acids. Phycocyanin has the functions of anti-cancer, promoting blood cell regeneration, maintaining ovary and promoting the synthesis of elastin in human body. At the beginning of the 21st century, in Europe, America, Japan and other countries, phycocyanin was widely used as a high-grade natural pigment in food and cosmetics, and was made into biochemical drugs. 2.Phycocyanin benefits Phycocyanin can help regulate and synthesize a variety of important enzymes required by human metabolism. It plays an important role in inhibiting the growth of c
  • 2022-08-16
    Why is grape seed extract known as "skin vitamin" and "oral cosmetics"?
    1. What is grape seed extract? Grape seed extract is a nutritious food refined from the effective active nutritional ingredients extracted from natural grape seeds and the main raw materials such as vitamin E. Grape seed extract is a new type of natural antioxidant which can not be synthesized in human body. It is the substance with the strongest antioxidant and free radical scavenging ability found in nature at present. Its antioxidant activity is 50 times that of vitamin E and 20 times that of vitamin C. It can effectively remove excess free radicals in the human body, and has a strong anti-aging and immunity enhancing effect. Anti oxidation, anti allergy, anti fatigue, enhance physical fitness, improve sub-health status, delay aging, improve irritability, dizziness, fatigue, memory loss and other symptoms. 2.Essential information Chinese Name: grape seed extract English Name: Grape Seed P.E; Grape Seed Extract; GSE Latin scientific name: Vitis vinifera L Source: seeds of Vitis vinifera L. Character: reddish brown powder, slight air and astringent taste. Application dosage form: water injection capsule 3.Purpose Grape seed extract is one of the most effective antioxidants fro
  • 2022-08-09
    What are the effects of betulinic acid Powder?
    1.The main source of betulinic acid? First, it is extracted and separated from natural plants. This method consumes a large amount of solvent, has low yield and is difficult to separate impurities, so it is rarely used; Secondly, betulinic acid was synthesized from betulin by organic synthesis. This method has been applied to industrial production, and betulinic acid of industrial scale can be obtained, which is the main source of betulinic acid in the market; Thirdly, betulin was used as precursor to produce betulinic acid by microbial transformation. 2.Application and efficacy of betulinic acid (1). Anti tumor effect Betulinic acid was first found to have extremely strong selective cytotoxicity to melanoma cells, and in recent years, it has also been found to have strong broad-spectrum activity against other tumor cells, such as glioblastoma, neuroblastoma, neuroblastoma, Ewing tumor and other malignant tumors, colon cancer, breast cancer, lung cancer, liver cancer, prostate cancer, kidney cell Ovarian or cervical cancer and leukemia have strong inhibitory effects (2). Anti inflammatory effect Most pentacyclic triterpenoids have a
  • 2022-08-02
    What are the benefits of Sophora Root extract for humans and animals?
    1. What is Sophora Root extract? Sophora flavescens extract is the extract of Sophora flavescens, the main effective component of oxymatrine content of more than 98%. It has the functions of clearing away heat and dampness, killing insects and diuresis. It is used for hot dysentery, bloody stool, jaundice, urination, red leucorrhea, Yin swelling and Yin itching, eczema, wet sore, skin itching, scabies and leprosy, and external treatment of trichomonal vaginitis. 2. Sophora Root extract benefits 1. Protection of gastric mucosa Sophora flavescens extract has obvious protective effect on gastric mucosal damage caused by hydrochloric acid, ethanol and indomethacin. Its main component is flavanone compounds. Recent studies have shown that matrine is also one of the effective components of Sophora flavescens against gastric mucosal injury, and has a certain anti ulcer effect. 2. Anti inflammatory effect Matrine has obvious antagonism against acute exudative inflammation caused by various inflammatory agents (croton oil, glacial acetic acid, carrageenan, egg white), which is similar to hydrocortisone. Its anti-inflam
  • 2022-07-27
    What is the first double effect magical substance in the world?
    Nervonic acid is recognized by scientists all over the world as the first and only double effect magical substance that can repair and dredge damaged brain neural pathways - nerve fibers and promote nerve cell regeneration. 1. What is Nervonic acid? Nervonic acid, also known as shark acid, is an unsaturated fatty acid with 24 carbon atoms and 1 double bond, which exists in nerve tissue and fish oil. It is named because it was first found in shark brain. It mainly comes from shark brain and shark oil. Neuritic acid is the core natural component of brain nerve fibers and nerve cells. Lack of nerve acid will cause brain diseases such as stroke sequelae, Alzheimer's disease, cerebral palsy, brain atrophy, memory loss, insomnia and amnesia. Neuritic acid is difficult to produce by human body itself, and can only be supplemented by external intake. 2.Nervonic acid powder benefits
  • 2022-07-20
    How about the weight loss effect of HCA/Garcinia cambogia extract?
    1. What is Garcinia cambogia extract? Garcinia fruit extract is extracted from the peel of Garcinia plants, and its effective component is HCA (hydroxycitric acid). HCA can change the metabolism of lipids and carbohydrates in the body, and has the effects of reducing body weight, reducing blood lipids, inhibiting appetite and so on. It is often used as the main functional component of natural weight loss health products. HCA can not only reduce the intake of heat cards, change the metabolism of lipids and carbohydrates, promote energy metabolism, or strengthen the "combustion" of heat cards, so as to achieve the purpose of weight loss. 2.Garcinia cambogia extract benefits It can reduce weight by inhibiting the synthesis of fat, promoting the combustion of fatty acids and reducing food intake. It is the most ideal and healthy weight loss health care raw material for weight loss at present. (1)It can inhibit appetite, prevent protein and carbohydrate from transforming into fat, and slow down the formation of fatty acids and cholesterol. (2)
  • 2022-07-13
    In which aspects is tetracaine hydrochloride applied?
    Tetracaine hydrochloride is a highly effective local anesthetic that can block nerve function reversibly. It is used in infiltration anesthesia, nerve block anesthesia, epidural anesthesia, etc. compared with procaine, its local anesthesia effect is significant, and has been widely used in clinic. Through studying the existing synthesis routes, it is found that the synthesis of intermediate p-butylamino benzoic acid is the key step in the synthesis of tetracaine hydrochloride, which has the shortcomings of unstable raw materials or low yield. Scientists have improved this. In 1981, they proposed to synthesize p-butylamino benzoic acid by alkylating p-aminobenzoic acid with 1-Bromobutane. However, due to the inevitable formation of by-products of dibutylation and the unstable nature of raw materials, this route is not suitable for industrial production. Purpose: This product is a long-acting ester local anesthetic. Its action characteristics are: strong penetration to mucosa, suitable for surface anesthesia, and no adverse reactions such as vasoconstriction, mydriasis, corneal injury after eye drops. It is commonly used in ophthalmology. The local anesthetic effect and toxicity are about 10 times greater than procaine. After injection, the intoxication of hemp chemicalbook appeared slowly (about 10 minutes), and the metabolism was also slow after absorption. The local anesthesia time was up to 3ij, h, -j. about. It is mainly used for surface anesthesia of eye, nose and throat mucosa, and rarely used for conduction anesthesia and epidural anesthesia. Generally, it is n

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