Hydantoin Impurity 29 CAS 4371-32-8
| CAS No. | 4371-32-8 |
| Molecular Formula | C12H10O4 |
| Molecular Weight | 218.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Hydantoin Impurity 29 (CAS 4371-32-8), a pharmacopoeial impurity reference standard (molecular formula C12H10O4, MW 218.21 g/mol) used for the identification and quantification of trace impurities in APIs.
Hydantoin Impurity 29 (C12H10O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, 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).
CATO manufactures Hydantoin Impurity 29 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 | C12H10O4 |
| Molecular Weight | 218.21 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Hydantoin Standards
- Hydantoin Impurity 32 (CAS 1426129-52-3)
- Hydantoin 5-Bromoethyl (CAS 7471-52-5)
- Hydantoin Impurity 7 (CAS 117751-51-6)
- Hydantoin 5-Cyclobutyl 5-Phenyl (CAS 125650-44-4)
- Hydantoin 1-Benzylideneamino (CAS 2827-57-8)
- Hydantoin 1-Benzyl 5-Ethoxy (CAS 65855-02-9)
- Hydantoin Impurity 27 (CAS 121565-48-8)
- Hydantoin Impurity 2 (CAS 69489-37-8)
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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