Indobufen Impurity 32 CAS 21762-24-3
| CAS No. | 21762-24-3 |
| Molecular Formula | C10H13NO2 |
| Molecular Weight | 179.22 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Indobufen Impurity 32 (CAS 21762-24-3) is a certified pharmaceutical impurity reference standard with the molecular formula C10H13NO2 and a molecular weight of 179.22 g/mol.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Indobufen Impurity 32 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 179.22 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
CATO manufactures Indobufen 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 | C10H13NO2 |
| Molecular Weight | 179.22 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 1 |
Related Indobufen Standards
- Indobufen Impurity 33 (CAS 937671-41-5)
- Indobufen Impurity 7 (CAS 29644-97-1)
- Indobufen Impurity 49 (CAS CATO-C4X-179249)
- Indobufen Impurity 17 (CAS 104-03-0)
- Indobufen Impurity N3 (CAS 21762-23-2)
- Indobufen Impurity 14 (CAS 94814-82-1)
- Indobufen Impurity 3 (CAS 1379292-20-2)
- Indobufen Impurity 89 (CAS CATO-C4X-179289)
Recommended Standards
- Lisinopril EP Impurity A (CAS 1012-05-1)
- Lidocaine Impurity 34 (CAS 29183-14-0)
- Phenylephrine Impurity 35 (CAS 57236-57-4)
- Betahistine impurity 40 (CAS CATO-C4X-183840)
- Mirogabalin Impurity 201 (CAS CATO-C4X-2924201)
- Cabazitaxel Impurity 28 (CAS 949459-78-3)
- Dacarbazine EP Impurity A (CAS 4656-86-4)
- Warfarin EP Impurity C (CAS 1896-62-4)
- 4-(Difluoromethyl)-5-nitro-6-oxo-1,6-dihydropyridine-3-carboxamide (CAS 1805087-89-1)
- 1-(6-Nitro-2H-1,3-benzodioxol-5-yl)-1H-pyrrole (CAS 1280538-10-4)
- 2-Mesitylbutan-2-ol (CAS 1379369-05-7)
- Ethyl 5-Methyl-1,2,4-oxadiazole-3-carboxylate (CAS 40699-38-5)
- 3-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoic acid (CAS 797755-09-0)
- Semaglutide impurity 270 (CAS CATO-C4X-2226270)
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