中文名字： L-半胱氨酸

Product Name:L-Cysteine
Synonyms: (R)-2-Amino-3-mercaptopropionic acid
Molecular Formula:C₃H₇NO₂S
CAS #:52-90-4

 

Test Items	Standard
Appearance	White crystals or crystalline powder
Assay	98.5% to 100.5%
Specific Rotation [α]20/D	+5.5~7.0° (C=8 in 1N HCl)
Loss on Drying	8.5% to 12.0%
Residue in Ignition (Sulfate)	Not more than 0.10%
Chloride (Cl)	19.89% to 20.29%
Heavy Metals (Pb)	Not more than 10 PPM