L-Cysteine by MP Biomedicals is a high purity amino acid. This is classified as a semi-essential, proteinogenic amino acid encoded by the codons UGU and UGC. It has a thiol side chain which often participates in enzymatic reactions, as a nucleophile. This reagent is available as white powder which is soluble in water, alcohol, acetic acid, ammonia water, however insoluble in ether, acetone, benzene, ethyl acetate. It has a boiling point of 293.9 C at 760 mmHg and a melting Point at 213 - 235 C. CAS Number: 52-90-4 Quantity provided: 25 gm per bottle Molecular Formula: C3H7NO2S Molecular Weight: 121.16 Soluble in water, alcohol, acetic acid, ammonia water L-cysteine has a wide range of applications in various sectors. It is a precursor in the food, pharmaceutical and personal-care industries. It reacts with sugars in a Maillard reaction to produce meat flavour. Cysteine is a very popular target for site-directed labelling experiments to investigate biomolecular structures and dynamics. L-cysteine is used in producing antioxidants. It also promotes healing of severe burns, fat burning and helps build muscle and promotes the activity of white blood cells. Cysteine has also been proposed as a preventative, or an antidote for some of the negative effects of alcohol, including liver damage and hangover. It counteracts the poisonous effects of acetaldehyde.