Indobufen Impurity 56 CAS 858847-37-7
| CAS No. | 858847-37-7 |
| Molecular Formula | C20H22N2O5 |
| Molecular Weight | 370.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Indobufen Impurity 56 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.
CATO supplies Indobufen Impurity 56 (CAS 858847-37-7), a pharmacopoeial impurity reference standard (molecular formula C20H22N2O5, MW 370.40 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C20H22N2O5, Indobufen Impurity 56 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 370.40 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C20H22N2O5 |
| Molecular Weight | 370.40 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
Related Indobufen Standards
- Indobufen Impurity 60 (CAS CATO-C4X-179260)
- Indobufen Impurity 66 (CAS CATO-C4X-179266)
- Indobufen Impurity 72 (CAS CATO-C4X-179272)
- Indobufen Impurity 62 (CAS CATO-C4X-179262)
- Indobufen Impurity 57 (CAS CATO-C4X-179257)
- Indobufen Impurity 44 (CAS CATO-C4X-179244)
- Indobufen Impurity 30 (CAS CATO-C4X-179230)
- Indobufen Impurity 88 (CAS CATO-C4X-179288)
Recommended Standards
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- Adapalene Impurity 10 (CAS 161912-38-5)
- Conjugated Estrogens EP Impurity F (CAS 16680-50-5)
- Lornoxicam impurity 61 (CAS CATO-C4X-201661)
- Clopidogrel Impurity 64 (CAS CATO-C4X-102964)
- Vonoprazan Impurity 244 (CAS CATO-C4X-1020244)
- 7-Bromo-1-methyl-2,3-dihydro-1H-indol-2-one (CAS 100831-25-2)
- 2-(3,5-Difluorophenyl)-1,3,4-oxadiazole (CAS 1171930-36-1)
- 5-Fluoro-2-(piperazin-1-yl)quinoxaline (CAS 55686-71-0)
- Nicotinic Acid Riboside (CAS 17720-18-2)
- 2-(Ethylsulfonyl)-N-(4-fluorophenyl)-1,2,3,4-tetrahydroisoquinoline-3-carboxamide (CAS 1008280-11-2)
- ethyl 2-[3-(hydroxymethyl)phenyl]acetate (CAS 272130-46-8)
- Cholecystokinin Octapeptide (desulfated) (H-2070.0005) (CAS 198483-36-2)
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