L-Cysteine hydrochloride monohydrate
SIAL/30122 - tested according to Ph. Eur.
Synonym: Cysteini hydrochloridum monohydricum
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
| agency | tested according to Ph. Eur. |
| USP/NF | |
| application(s) | pharmaceutical (small molecule) |
| assay | 98.5-101.0% |
| form | solid |
| InChI | 1S/C3H7NO2S.ClH.H2O/c4-2( |
| InChI key | QIJRTFXNRTXDIP-JIZZDEOASA |
| mp | 176 °C |
| Quality Level | 100  |
| SMILES string | O.Cl.N[C@@H](CS)C(O)=O |
| solubility | H2O: soluble 100 g/L at 25 °C |
| Application: | L-Cysteine hydrochloride monohydrate was used in the synthesis of polycarbophil-cysteine conjugate. |
| Biochem/physiol Actions: | Cysteine is a non-essential, thiol-containing amino acid that has protective effects in normal tissues. It is converted to glutathione that decreases the effects of chemotherapeutic and radiation agents. This might restrict the effect of therapeutic agents used for cancer treatment. |
| Biochem/physiol Actions: | NMDA glutamatergic receptor antagonist. |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | 98.5-101.0% |
| mp | 176 °C |
| UNSPSC | 12352209 |