2-Amino-3-mercaptopropanoic acid

• CAT Number: R056706
• CAS Number: 3374-22-9
• Molecular Formula: C3H7NO2S
• Molecular Weight: 121.15
• Purity: ≥95%
• Synonyms: 2-amino-3-sulfanylpropanoic acid
• InChI: InChI=1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)
• InChIKey: XUJNEKJLAYXESH-UHFFFAOYSA-N
• SMILES: C(C(C(=O)O)N)S

2-Amino-3-mercaptopropanoic acid（Cat No.:R056706）, commonly known as cysteine, is a sulfur-containing non-essential amino acid integral to various biological processes. It is a colorless crystalline solid, soluble in water, ethanol, acetic acid, and ammonia, but insoluble in benzene, carbon tetrachloride, ethyl acetate, carbon disulfide, ether, and acetone. Cysteine’s thiol side chain enables the formation of disulfide bonds, crucial for stabilizing protein structures. It serves as a precursor for biomolecules like glutathione and coenzyme A. In the food and pharmaceutical industries, cysteine is utilized for its antioxidant properties and as a flavor enhancer. It is also employed in cosmetic formulations for hair care products. Proper handling and storage are essential to maintain its stability and reactivity.​