L-Cysteine hydrochloride monohydrate
SIGMA/30129 - BioUltra, ≥99.0% (RT)
Synonym: L-Cysteine hydrochloride hydrate (1:1:1)
CAS Number: 7048-04-6
Empirical Formula (Hill Notation): C3H7NO2S · HCl · H2O
Molecular Weight: 175.63
EC Number: 200-157-7
MDL Number: MFCD00065606
Linear Formula: HSCH2CH(NH2)COOH · HCl · H2O
Product Type: Chemical
| λ | 1 M in H2O |
| anion traces | sulfate (SO42-): ≤200 mg/kg |
| assay | ≥99.0% (RT) |
| cation traces | Al: ≤10 mg/kg |
| As: ≤0.5 mg/kg | |
| Ba: ≤5 mg/kg | |
| Bi: ≤5 mg/kg | |
| 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 | |
| Li: ≤5 mg/kg | |
| Mg: ≤5 mg/kg | |
| Mn: ≤5 mg/kg | |
| Mo: ≤5 mg/kg | |
| Na: ≤100 mg/kg | |
| NH4+: ≤500 mg/kg | |
| Ni: ≤5 mg/kg | |
| Pb: ≤5 mg/kg | |
| Sr: ≤5 mg/kg | |
| Zn: ≤5 mg/kg | |
| color | white |
| form | crystals |
| ign. residue | ≤0.05% (as SO4) |
| impurities | insoluble matter, passes filter test |
| ≤0.5% foreign amino acids | |
| InChI | 1S/C3H7NO2S.ClH.H2O/c4-2( |
| InChI key | QIJRTFXNRTXDIP-JIZZDEOASA |
| optical activity | [α]20/D +5.6±0.3°, c = 5% in 5 M HCl |
| product line | BioUltra |
| Quality Level | 200  |
| SMILES string | O.Cl.N[C@@H](CS)C(O)=O |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| UV absorption | λ: 260 nm Amax: 1.0 |
| λ: 280 nm Amax: 0.3 |