Tranilast Impurity 2 CAS 91920-58-0
| CAS No. | 91920-58-0 |
| Molecular Formula | C18H17NO5 |
| Molecular Weight | 327.33 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Tranilast Impurity 2 (CAS 91920-58-0), a pharmacopoeial impurity reference standard (molecular formula C18H17NO5, MW 327.33 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C18H17NO5, Tranilast Impurity 2 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 327.33 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures Tranilast Impurity 2 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 | C18H17NO5 |
| Molecular Weight | 327.33 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Nitrogen Atoms | 1 |
Related Tranilast Standards
- Tranilast Impurity 1 (CAS 70806-55-2)
- Tranilast (CAS 53902-12-8)
- Tranilast Impurity 8 (CAS 320777-16-0)
- Tranilast Impurity 13 (CAS CATO-C4X-252913)
- Tranilast Impurity 7 (CAS 93755-77-2)
- Tranilast impurity 5 (CAS 697235-52-2)
- Tranilast Impurity 12 (CAS CATO-C4X-252912)
- Tranilast Impurity 11 (CAS CATO-C4X-252911)
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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