L-Cysteine hydrochloride

Product Name

L-Cysteine hydrochloride, anhydrous, ≥99.0% (RT)

Quality Level

200

Assay

≥99.0% (RT)

form

powder or crystals

optical activity

[α]20/D +6.4±0.3°, c = 5% in 5 M HCl

impurities

≤0.5% foreign amino acids

ign. residue

≤0.1% (as SO₄)

loss

≤1.0% loss on drying

color

white

mp

174.1-174.7 °C

solubility

H₂O: 1 g/10 mL, clear, colorless

anion traces

sulfate (SO₄^2-): ≤100 mg/kg

cation traces

Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
NH₄⁺: ≤500 mg/kg
Na: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

application(s)

peptide synthesis

SMILES string

Cl[H].N[C@@H](CS)C(O)=O

InChI

1S/C3H7NO2S.ClH/c4-2(1-7)3(5)6;/h2,7H,1,4H2,(H,5,6);1H/t2-;/m0./s1

InChI key

IFQSXNOEEPCSLW-DKWTVANSSA-N