Tranilast Impurity 13 CAS CATO-C4X-252913
| CAS No. | CATO-C4X-252913 |
| Molecular Formula | C19H15NO5 |
| Molecular Weight | 337.33 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Tranilast Impurity 13 (C19H15NO5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 337.33 g/mol, it falls into the moderately-high-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).
CATO supplies Tranilast Impurity 13 (CAS CATO-C4X-252913), a pharmacopoeial impurity reference standard (molecular formula C19H15NO5, MW 337.33 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
As a certified reference material (CRM), Tranilast Impurity 13 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C19H15NO5 |
| Molecular Weight | 337.33 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 |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Tranilast Standards
- Tranilast impurity 5 (CAS 697235-52-2)
- Tranilast Impurity 8 (CAS 320777-16-0)
- Tranilast Impurity 1 (CAS 70806-55-2)
- Tranilast Impurity 2 (CAS 91920-58-0)
- Tranilast (CAS 53902-12-8)
- Tranilast Impurity 12 (CAS CATO-C4X-252912)
- Tranilast Impurity 11 (CAS CATO-C4X-252911)
- Tranilast impurity 6 (CAS 343783-68-6)
Recommended Standards
- Roxadustat Impurity 50 (CAS CATO-C4X-221350)
- Cinitapride Impurity 11 (CAS CATO-C4X-290811)
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- Cinitapride Impurity 32 (CAS CATO-C4X-290832)
- Carbetocin Impurity 12 (CAS CATO-C4X-191112)
- Azithromycin Impurity 4 (CAS CATO-C4X-10034)
- Agomelatine Impurity 33 (CAS 1079774-32-5)
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- Irinotecan EP Impurity M TFA Salt (CAS CATO-C4X-166753)
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- N-(Pyrrolidin-3-yl)pyrimidin-2-amine hydrochloride (CAS 950649-09-9)
- Galanin Message Associated Peptide (1-41) amide trifluoroacetate salt (CAS 132699-74-2)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com