1161509
USP
L-Cysteine hydrochloride
United States Pharmacopeia (USP) Reference Standard
Synonym(s):
L-Cysteine hydrochloride monohydrate
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About This Item
Linear Formula:
HSCH2CH(NH2)COOH · HCl · H2O
CAS Number:
Molecular Weight:
175.63
Beilstein:
5158059
MDL number:
UNSPSC Code:
41116107
PubChem Substance ID:
NACRES:
NA.24
grade
pharmaceutical primary standard
API family
cysteine
form
powder
manufacturer/tradename
USP
solubility
water: 100 g/L at 25 °C
application(s)
pharmaceutical (small molecule)
format
neat
SMILES string
O.Cl.N[C@@H](CS)C(O)=O
InChI
1S/C3H7NO2S.ClH.H2O/c4-2(1-7)3(5)6;;/h2,7H,1,4H2,(H,5,6);1H;1H2/t2-;;/m0../s1
InChI key
QIJRTFXNRTXDIP-JIZZDEOASA-N
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General description
This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia. For further information and support please go to the website of the issuing Pharmacopoeia.
Application
L-Cysteine hydrochloride USP reference standard intended for use in specified quality tests and assays.
Also used to prepare standard stock solution during the assay and impurity analysis of Cysteine Hydrochloride and Cysteine Hydrochloride Injection.
Also used to prepare standard stock solution during the assay and impurity analysis of Cysteine Hydrochloride and Cysteine Hydrochloride Injection.
Biochem/physiol Actions
NMDA glutamatergic receptor antagonist.
Analysis Note
These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.
Storage Class Code
13 - Non Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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Cysteine Hydrochloride
United States Pharmacopeia and National Formulary
United States Pharmacopeia, 42(1), 1221-1221 (2023)
Cysteine Hydrochloride Injection
United States Pharmacopeia and National Formulary
United States Pharmacopeia, 1222-1222 (2018)
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