Furosemide Impurity 32 CAS 18240-50-1
| CAS No. | 18240-50-1 |
| Molecular Formula | C10H11NO2 |
| Molecular Weight | 177.20 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Furosemide Impurity 32 is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Furosemide Impurity 32 (CAS 18240-50-1) is a certified pharmaceutical impurity reference standard with the molecular formula C10H11NO2 and a molecular weight of 177.20 g/mol.
Furosemide Impurity 32 (C10H11NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO manufactures Furosemide Impurity 32 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C10H11NO2 |
| Molecular Weight | 177.20 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 1 |
Related Furosemide Standards
- Furosemide Impurity 33 (CAS 1803102-41-1)
- Furosemide Impurity 49 (CAS CATO-C4X-140249)
- Furosemide Impurity 57 (CAS 19377-82-3)
- Furosemide Impurity 57 (CAS 5428-37-5)
- Furosemide EP Impurity E (CAS 50-84-0)
- Furosemide Impurity 41 (CAS 137-65-5)
- Furosemide Impurity 34 (CAS 6660-65-7)
- Furosemide Impurity 21 (CAS 30170-04-8)
Recommended Standards
- Cilostazol impurity 11 (CAS 54197-64-7)
- Lidocaine Impurity 88 (CAS 1903300-52-6)
- Dobutamine Impurity 27 (CAS 93-17-4)
- Ropinirole EP Impurity F (CAS 139122-19-3)
- Ipragliflozin Impurity 17 (CAS CATO-C4X-188517)
- Tazobactam Impurity 9 (CAS CATO-C4X-12059)
- Afobazole Impurity 1 (CAS 189638-30-0)
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- Methyl 2-(isopropylamino)dibenzo[b,d]furan-3-carboxylate (CAS 1220886-33-8)
- 7-Bromo-2-(furan-2-yl)quinoline-4-carboxylic acid (CAS 588687-41-6)
- Pyridin-2-yl(thiophen-3-yl)methanamine (CAS 1021417-88-8)
- Neuropeptide SF (human) (CAS 192387-39-6)
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 18665070610 / Nicole.chen@cato-chem.com