1161509

L-Cysteine hydrochloride

United States Pharmacopeia (USP) Reference Standard

• Synonym(s): L-Cysteine hydrochloride monohydrate
• Linear Formula: HSCH₂CH(NH₂)COOH · HCl · H₂O
• CAS Number: 7048-04-6
• Molecular Weight: 175.63
• UNSPSC Code: 41116107
• NACRES: NA.24
• PubChem Substance ID: 329749498
• MDL number: MFCD00065606
• Beilstein/REAXYS Number: 5158059

Properties

• grade: pharmaceutical primary standard
• agency: USP
• 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

Description

General description

Find answers to frequently asked questions on USP products in USP FAQs.

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.

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.  ​

Other Notes

Sales restrictions may apply.

USP issued SDS can be found here.

Safety Information

• flash_point_f: Not applicable
• flash_point_c: Not applicable
• Storage Class: 11 - Combustible Solids