Oxolinic Acid Impurity 1 CAS 50332-56-4
| CAS No. | 50332-56-4 |
| Molecular Formula | C14H13NO5 |
| Molecular Weight | 275.26 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Oxolinic Acid Impurity 1 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.
Oxolinic Acid Impurity 1 (CAS 50332-56-4) is a certified pharmaceutical impurity reference standard with the molecular formula C14H13NO5 and a molecular weight of 275.26 g/mol.
Structurally, Oxolinic Acid Impurity 1 (C14H13NO5) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 275.26 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C14H13NO5 |
| Molecular Weight | 275.26 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
| Nitrogen Atoms | 1 |
Related Oxolinic Standards
Recommended Standards
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- Aminolevulinic Acid Related Compound B (CAS 109258-71-1)
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- Resmetirom impurity 94 (CAS CATO-C4X-291294)
- Dalilesen Impurity 11 (CAS CATO-C4X-301011)
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- (2-(Benzyloxy)-4-methoxyphenyl)methanol (CAS 171817-14-4)
- 7-Chloro-3-(4-methoxyphenyl)-3,4-dihydro-2H-benzo[b][1,4]oxazine (CAS 1713714-11-4)
- Azilsartan Impurity 9 (CAS 136285-69-3)
- Lornoxicam Impurity 1 (CAS 187746-97-0)
- N-Mal-N-bis(PEG2-C2-Boc) (CAS 2100306-51-0)
- Biotinyl-CBP501 Affinity Peptide trifluoroacetate salt (CAS 2022956-39-2)
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