L-Cysteine

Product Name:	L-Cysteine
CAS NO.:	52-90-4
Chemical Structure:
Molecular Formula:	C₃H₇NO₂S
Molecular Weight:	121.16
Properties:	White crystal or crystalline powder, easily soluble in water, has slight taste, insoluble in ethanol, Insoluble in ether etc.
Use:	1. In cosmetics: for the manufacture of perfume, sunscreen cream etc. 2. In medicines: for liver drugs, antidotes etc. 3. In food: as promoter of bread fermentation, antistaling agent.
Packing:	25KG fiber drum, or upon clients' requests.
Storage:	Avoid light, stored in dry and cool place; no mixing with toxic and hazardous articles. It is non-dangerous article, and can be transported as common chemicals; handle with care; protect against sunlight and rain.

Properties

L-Cysteine is a kind of nonessential amino acid, which exists in keratin. Keratin is the main protein of nails, toenails, skin and hair. The relationship between L-cysteine and cystine is very close. Two molecules of L-cysteine form one molecule of cystine. L-Cysteine is more unstable. It is easy to become cystine which can also be reduced to L-cysteine. Both of them are sulfur-containing amino acids, which have effects on skin formation and detoxification. L-Cysteine is mainly used in cosmetics, medicine and food. In cosmetics, it is used to prepare perm, sunscreen, hair perfume and hair essence. In the field of medicine, it is used to prepare methyl cysteine, ethyl cysteine, acetylcysteine, methyl cysteine, ethyl cysteine and comprehensive amino acid preparations. L-Cysteine can also be used as a protective drug against radiation injury. In food, L-cysteine is used as bread fermentation auxiliary (ripening agent), antioxidant stabilizer for milk powder and fruit juice, and nutrient for pet animal food.

CAS No.

52-90-4

Formula

C3H7NO2S

Molecular Mass

121.158

Exact Mass

121.02

PSA

102.12000

Logp

0.02840