Furosemide Impurity 56 CAS 4439-57-0
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 4439-57-0 |
| Molecular Formula | C5H5NO |
| Molecular Weight | 95.10 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Furosemide Impurity 56 (CAS 4439-57-0) is a pharmacopoeial impurity standards certified reference material from CATO. Molecular formula: C5H5NO. Molecular weight: 95.10 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C5H5NO |
| Molecular Weight | 95.10 g/mol |
| Purity | 97%+ |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
Related Furosemide Standards
- Furosemide Impurity 28 (CAS 98-00-0)
- Furosemide Impurity 29 (CAS 4795-29-3)
- Furosemide Impurity 33 (CAS 1803102-41-1)
- Furosemide Impurity 49 (CAS CATO-C4X-140249)
- Furosemide Impurity 57 (CAS 19377-82-3)
- Furosemide Impurity 32 (CAS 18240-50-1)
- Furosemide Impurity 57 (CAS 5428-37-5)
- Furosemide Impurity 1 HCl (Furfurylamine HCl) (CAS 4753-68-8)
Recommended Standards
- Levetiracetam EP Impurity C (CAS 142-08-5)
- Glucosamine sulfate Impurity 13 (CAS 1003-29-8)
- Vonoprazan Impurity 129 (CAS 109-00-2)
- Ribavirin Impurity 50 (CAS 13035-61-5)
- Levocarnitine Impurity 44 (CAS 875826-86-1)
- Diethylcarbamoyl Chloride (CAS 88-10-8)
- 4,5-Dibenzyl-4H-1,2,4-triazole-3-thiol (CAS 83673-68-1)
- tert-Butyl 4-(5-bromopyridin-3-yl)piperazine-1-carboxylate (CAS 412348-60-8)
- 2,4,6,7-tetrahydropyrano[4,3-c]pyrazole (CAS 258353-57-0)
- Semaglutide impurity 26 (CAS CATO-C4X-222626)
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