L-Cystine

Product introduction:

Cystine is an amino acid drug, which can promote the redox function of cells, make the liver function vigorous, neutralize toxins, promote leukocyte proliferation and prevent the development of pathogens; Vitamin B1 binds adenosine triphosphate to form vitamin B1 pyrophosphate (thiamine diphosphate, cocarboxylase) is a necessary coenzyme for carbohydrate metabolism; vitamin B1 can inhibit the activity of cholinesterase, increase the activity of cholinesterase when lacking, accelerate the hydrolysis of acetylcholine, cause nerve impulse conduction disorder and affect gastrointestinal and myocardial functions; calcium pantothenate is the precursor of coenzyme A and a variety of metabolic links Essential substances (including carbohydrates, proteins and lipids), which can participate in the synthesis of steroids, porphyrins, acetylcholine and other substances, and maintain normal epithelial function.

CAS No.: 200-296-3

Molecular formula: C₆H12N₂O₄S₂

Quality standard: CP2010/AJI/EP/USP

Physical and chemical properties:

Properties: white hexagonal plate crystal or white crystalline powder

Melting point: 258 ℃

Solubility: soluble in dilute acid and alkali solutions, extremely insoluble in water and insoluble in ethanol.

There are three isomers: l(a)evo isomer (L - (−) - cystine), dextro isomer (D - (+) - cystine) and racemic. It is easy to be reduced by reducing agents such as ethyl mercaptan and dithiothreitol. After reduction, the disulfide bond is disassembled into two cysteines. Heating also breaks the disulfide bond.

Purpose:

Amino acid drugs, food additives, chemical intermediates, feed, fertilizer and other industries.

It is used in biochemistry and nutrition research. In medicine, it can promote the oxidation and reduction function of body cells, increase white blood cells and prevent the development of pathogenic bacteria. It is mainly used for various alopecia. It is also used for acute infectious diseases such as dysentery, typhoid, influenza, asthma, neuralgia, eczema and various poisoning diseases, and plays a role in maintaining protein configuration. It is also used as food flavoring agent.