L-Cysteine hydrochloride
SIGMA/30120 - anhydrous, ≥99.0% (RT)
Synonym: L-Cysteine hydrochloride (1:1)
CAS Number: 52-89-1
Empirical Formula (Hill Notation): C3H7NO2S · HCl
Molecular Weight: 157.62
EC Number: 200-157-7
MDL Number: MFCD00064553
Linear Formula: HSCH2CH(NH2)COOH · HCl
Product Type: Chemical
| anion traces | sulfate (SO42-): ≤100 mg/kg |
| application(s) | peptide synthesis |
| assay | ≥99.0% (RT) |
| 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 | |
| Na: ≤50 mg/kg | |
| NH4+: ≤500 mg/kg | |
| Ni: ≤5 mg/kg | |
| Pb: ≤5 mg/kg | |
| Zn: ≤5 mg/kg | |
| color | white |
| form | powder or crystals |
| ign. residue | ≤0.1% (as SO4) |
| impurities | ≤0.5% foreign amino acids |
| InChI | 1S/C3H7NO2S.ClH/c4-2(1-7) |
| InChI key | IFQSXNOEEPCSLW-DKWTVANSSA |
| loss | ≤1.0% loss on drying |
| mp | 174.1-174.7 °C |
| optical activity | [α]20/D +6.4±0.3°, c = 5% in 5 M HCl |
| Quality Level | 200  |
| SMILES string | Cl[H].N[C@@H](CS)C(O)=O |
| solubility | H2O: 1 g/10 mL, clear, colorless |
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