L-Cystine food and pharma grade Product No.:20264163130 Online Inquiry Details CAS 56-89-3 Name L-Cystine Formula C6H12N2O4S2 Formula weight 240.304 Storage Store at RT,avoid light Next Product:L-Histidine Related Products L-Carnitine-L-Tartrate Betaine anhydrous food grade Sarcosine