D-Cysteine CAS 921-01-7
Purity >95%In StockPharmaceutical Standards
| CAS No. | 921-01-7 |
| Molecular Formula | C3H7NO2S |
| Molecular Weight | 121.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
D-Cysteine (CAS 921-01-7) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C3H7NO2S. Molecular weight: 121.16 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C3H7NO2S |
| Molecular Weight | 121.16 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related D Standards
Recommended Standards
- Cyclopropanesulfonamide (CAS 154350-29-5)
- Acetylcysteine EP Impurity B (CAS 52-90-4)
- Bicyclo[2.2.1]heptane-1-carbonitrile (CAS 103434-09-9)
- N4-(3-aminophenyl)-5-fluoro-N2-(4-(2-methoxyethoxy)phenyl)pyrimidine-2,4-diamine (CAS 1202759-91-8)
- (3-Bromophenyl)(2-methoxyphenyl)methanol (CAS 1183724-23-3)
- 1-(5-Bromo-2-methoxyphenyl)cyclopentanecarbonitrile (CAS 75097-56-2)
- Eperisone impurity 19 (CAS CATO-C4X-227919)
- (E)-n-Cyclohexyl-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)methanimine (CAS 1218790-50-1)
- Dyclonine Impurity 12 (CAS 91763-92-7)
- Semaglutide Impurity 164 (CAS CATO-C4X-2226164)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com