Dorzolamide EP Impurity A CAS 120279-95-0
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 120279-95-0 |
| Molecular Formula | C10H16N2O4S3 |
| Molecular Weight | 324.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Dorzolamide EP Impurity A (CAS 120279-95-0), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C10H16N2O4S3. Molecular weight: 324.44 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C10H16N2O4S3 |
| Molecular Weight | 324.44 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 3 |
Related Dorzolamide Standards
- Dorzolamide (CAS 120279-96-1)
- Rac-Dorzolamide (CAS 120280-13-9)
- Dorzolamide (CAS 139066-77-6)
- Dorzolamide EP Impurity B（R,S-Isomer) (CAS 149249-72-9)
- Dorzolamide Impurity 3 (CAS CATO-C4X-12283)
- Dorzolamide Impurity 13 (CAS 897657-78-2)
- Dorzolamide-d5 (CAS 1227097-70-2)
- Dorzolamide Impurity 22 (CAS 147128-79-8)
Recommended Standards
- (4-Carboxyphenyl)diphenylphosphine 2129-31-9 4-(Diphenylphosphino)benzoic acid Diphenyl(p-carboxyphenyl) phosphine p-(Diphenylphosphino)benzoic acid (CAS 2129-31-9)
- rel-((1R,2R,5S)-2-Isopropyl-5-methylcyclohexyl)diphenylphosphane (CAS 32511-22-1)
- 2-({1-methyl-1h-pyrazolo[3,4-d]pyrimidin-4-yl}sulfanyl)-5-(propylsulfanyl)-1,3,4-thiadiazole (CAS 1007805-27-7)
- Trelagliptin Impurity 32 (CAS CATO-C4X-104632)
- Tamsulosin Impurity 48 (CAS 3259-03-8)
- Chloropropanol Mix 4 (CAS CATO-MCHM702889-EA)
- Mefruside (CAS 7195-27-9)
- (S)-N-Boc-1,2,3,6-tetrahydro-2-picolinic acid (S)-N-Boc-1,2,3,6-tetrahydro-2-pyridinecarboxylic acid 417726-36-4 (CAS 417726-36-4)
- 3-Methylcarbazole (CAS 4630-20-0)
- Semaglutide Impurity 188 (CAS CATO-C4X-2226188)
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