L-cysteine by Research Lab Fine Chem Industries is a high grade reagent. Also known as 2-Amino-3-sulfhydrylpropanoic acid, this a is proteinogenic amino acid. This reagent is available as a white powder which is soluble in water. It has a melting point at 240 C. Industrially, L-cysteine can be obtained from the hydrolysis of animal materials, such as poultry feathers or hog hair. While it is stable under general conditions, this reagent is incompatible with strong oxidizing agents. CAS No.: 52-90-4 Quantity Provided: 5 gm per bottle Molecular formula: C3H7NO2S molecular weight: 121.16 Assay: 99 %L-cysteine has a variety of applications in chemical and biological sectors. This compound finds several applications in the synthesis of various organic derivatives. L-cysteine is used as a precursor in the food, pharmaceutical and personal-care industries. It used as an additive, E920, usually as a flavouring agent. The molecule is additionally, a popular target for site-directed labelling experiments to investigate biomolecular structures and dynamics. L-cysteine is also added in the feed of sheep which require it to produce wool. This reagent is suitable for industrial synthesis of products and research applications.