Acetazolamide EP Impurity B CAS 5393-55-5
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 5393-55-5 |
| Molecular Formula | C4H5N3OS |
| Molecular Weight | 143.17 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Acetazolamide EP Impurity B (CAS 5393-55-5) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C4H5N3OS. Molecular weight: 143.17 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C4H5N3OS |
| Molecular Weight | 143.17 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Acetazolamide Standards
- Acetazolamide EP Impurity G (CAS 2349-67-9)
- Acetazolamide Impurity 7 (CAS 50608-12-3)
- Acetazolamide EP Impurity C (CAS 32873-56-6)
- Acetazolamide Impurity 8 (CAS 4454-63-1)
- Acetazolamide EP Impurity A (CAS 60320-32-3)
- Acetazolamide EP Impurity D (CAS 14949-00-9)
- Acetazolamide (CAS 59-66-5)
- Acetazolamide EP Impurity E (CAS 827026-60-8)
Recommended Standards
- Methimazole impurity 7 (CAS CATO-C4X-20607)
- 3-Oxa-9-azabicyclo[3.3.1]Nonan-7-ol (CAS 100368-36-3)
- N-Methyl-1,2,3-thiadiazole-4-carboxamide (CAS 500534-42-9)
- Maxacalcitol Impurity 19 (CAS 192573-34-5)
- Moxifloxacin Impurity 57 (CAS CATO-C4X-107457)
- tert-butyl 5-hydroxyazocane-1-carboxylate (CAS 2117725-20-7)
- 5-[(4-butylphenyl)amino]-1,3,4-thiadiazole-2-thiol (CAS 750613-93-5)
- 2-(4-Chloro-2-methylphenoxy)-1-(4-methylpiperazin-1-yl)ethan-1-one (CAS 101991-85-9)
- tert-Butyl (5-(aminomethyl)pyridin-3-yl)carbamate (CAS 1017793-23-5)
- Insulin Degludec Impurity 17 (CAS CATO-C4X-215717)
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