L-Cysteine hydrochloride monohydrate

InChI key

QIJRTFXNRTXDIP-JIZZDEOASA-N

InChI

1S/C3H7NO2S.ClH.H2O/c4-2(1-7)3(5)6;;/h2,7H,1,4H2,(H,5,6);1H;1H2/t2-;;/m0../s1

SMILES string

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

assay

≥99.0% (RT)

optical activity

[α]20/D +5.6±0.3°, c = 5% in 5 M HCl

impurities

≤1% foreign amino acids

ign. residue

≤0.1% (as SO₄)

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