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  • C7880 - L-Cysteine hydrochloride monohydrate

C7880 Sigma-Aldrich

L-Cysteine hydrochloride monohydrate

reagent grade, ≥98% (TLC)

  • CAS Number 7048-04-6

  • Linear Formula HSCH2CH(NH2)COOH · HCl · H2O

  • Molecular Weight 175.63

  •  Beilstein/REAXYS Number 5158059

  •  EC Number 200-157-7

  •  MDL number MFCD00065606

  •  eCl@ss 32160406

  •  PubChem Substance ID 24892992

  •  NACRES NA.26



Related Categories Amino Acids, Amino Acids & Derivatives, Biochemicals and Reagents, Cell Biology, Cell Signaling and Neuroscience,
Quality Level   200
grade   reagent grade
assay   ≥98% (TLC)
form   powder
application(s)   cell analysis: suitable
  peptide synthesis: suitable
color   white
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


General description

L-Cysteine hydrochloride monohydrate (LCHCMH) is a water soluble salt of the non-essential amino acid, L-cysteine. It is widely employed in the medicine industry. The thermodynamic features of a solution of LCHCMH in water have been reported. It crystallizes in the orthorhombic system with space group P212121. Its nonlinear optical (NLO) property has been investigated in a single crystal grown by unidirectional Sankaranarayanan-Ramasamy (SR) technique.


L-Cysteine hydrochloride monohydrate has been used in a protocol for the separation of dorsal root ganglion neurons (DRGs). It has also been used in a study to examine its effect as an inhibitor in preventing enzymatic browning in apples.


1 kg in poly bottle

100, 500 g in poly bottle

5 kg in poly drum

500 mg in poly bottle

Biochem/physiol Actions

NMDA glutamatergic receptor antagonist.

Safety & Documentation

Safety Information

Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Single- & multi-channel pipettes from BRAND
Protocols & Articles


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Enzymatic Assay of Cathepsin B

This procedure applies to all products that have a specification for Cathepsin B activity, such as Sigma-Aldrich Product Numbers C0150 and C8571, determined by the liberation of 7-amino-4-methylcouma...
Keywords: Enzyme activity, Enzymology

Enzymatic Assay of Ficin (EC

The spectrophotometric stop rate detemination (A280, Light path = 1 cm) is based on the following reaction:

Phosphoglucomutase Assay

This procedure may be used for all Phosphoglucomutase products except for β‑Phosphoglucomutase, Catalog Number P4109.
Keywords: Extinction coefficient

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Peer-Reviewed Papers


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