Cat Number: PIE-0167

L-Cysteine hydrochloride monohydrate

APIs
CAS Number
7048-04-6
Synonyms
L-Cysteine hydrochloride monohydrate
H-Cys-OH.HCl.H2O
(R)-2-Amino-3-mercaptopropanoic acid hydrochloride hydrate
L-Cysteine hydrochloride hydrate
Description
As an excipient, cysteine hydrochloride is commonly used as an antioxidant in injectable solutions, lyophilized preparations, as well as in eye drops and inhalation preparations.
Molecular Weight
175.64
Molecular Formula
C3H10ClNO3S
EINECS
615-117-8/629-054-9
SMILES
C(C(C(=O)O)N)S.O.Cl
Appearance
Solid
Color
White to Off-White
Boiling Point
293.9ºC at 760 mmHg
Density, g/cm3
1.54
Melting Point
166-170℃
Standard
EP
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