L-Cystine and L-Cysteine Base 1. L-Cystine CAS NO.: 56-89-3 Chemical Name: L-Cystine Molecular Formula: C6H12N2O4S2 Molecular Weight: 240.29 Characteristics: a colorless or white crystalline substance of hexagon,or crystalline powder, easily soluble in acid and alkali, insoluble in water and organic solvents such as alcohol, ethyl ether. Packing: 25kg/drum,25kg/carton Quality Standard: aJI92/USP28/EP5/FCCIV mutualchem(at)gmail(dot)com 2. L-Cysteine Base CAS NO.: 52-90-4 Chemical Name: L-Cysteine Base Molecular Formula: C3H7NO2S Molecular Weight: 121.15 Characteristics: White crystalline powder, tasteless, easily soluble in water but insoluble in alcohol and ether. Packing: 25kg/drum, 25kg/carton Qualified Standard: aJI92/USP28/EP5/FCCIV mutualchem(at)gmail(dot)com


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