L-Cysteine
SIGMA/30089 - BioUltra, ≥98.5% (RT)
Synonym: (R)
CAS Number: 52-90-4
Empirical Formula (Hill Notation): C3H7NO2S
Molecular Weight: 121.16
EC Number: 200-158-2
MDL Number: MFCD00064306
Linear Formula: HSCH2CH(NH2)CO2H
Product Type: Chemical
| λ | 1 M in 1 M HCl |
| anion traces | chloride (Cl-): ≤100 mg/kg |
| sulfate (SO42-): ≤50 mg/kg | |
| assay | ≥98.5% (RT) |
| cation traces | Al: ≤5 mg/kg |
| As: ≤0.1 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 | powder or crystals |
| ign. residue | ≤0.05% (as SO4) |
| impurities | insoluble matter, passes filter test |
| ≤0.5% foreign amino acids | |
| InChI | 1S/C3H7NO2S/c4-2(1-7)3(5) |
| InChI key | XUJNEKJLAYXESH-REOHCLBHSA |
| loss | ≤0.05% loss on drying, 20 °C (HV) |
| mp | 240 °C (dec.) (lit.) |
| optical activity | [α]20/D +8.0±0.5°, c = 5% in 5 M HCl |
| product line | BioUltra |
| Quality Level | 200  |
| SMILES string | N[C@@H](CS)C(O)=O |
| solubility | 1 M HCl: 1 M at 20 °C, clear, colorless |
| technique(s) | HPLC: suitable |
| UV absorption | λ: 260 nm Amax: 1.5 |
| λ: 280 nm Amax: 0.2 |