USPUSP-NF
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l-Cysteine Monohydrochloride
l-2-Amino-3-mercaptopropanoic Acid Monohydrochloride C3H7NO2S·HCl·H2O Formula wt, monohydrate 175.63
 C3H7NO2S·HCl Formula wt, anhydrous 157.62
 920 [7048-04-652-89-1] ZT934N0X4W cysteine hydrochloride

DESCRIPTION

l-Cysteine Monohydrochloride occurs as a white, crystalline powder. It is freely soluble in water and in alcohol. The anhydrous form melts with decomposition at about 175°.

USP REFERENCE STANDARDS FOR PURCHASE

USP l-Cysteine Hydrochloride RS
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