Tranilast impurity 5 CAS 697235-52-2
| CAS No. | 697235-52-2 |
| Molecular Formula | C19H19NO5 |
| Molecular Weight | 341.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Tranilast impurity 5.
Tranilast impurity 5 (CAS 697235-52-2) is a certified pharmaceutical impurity reference standard with the molecular formula C19H19NO5 and a molecular weight of 341.36 g/mol.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Tranilast impurity 5 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 341.36 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 5 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 | C19H19NO5 |
| Molecular Weight | 341.36 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.) | 1985 |
| Nitrogen Atoms | 1 |
Related Tranilast Standards
- Tranilast Impurity 13 (CAS CATO-C4X-252913)
- Tranilast Impurity 8 (CAS 320777-16-0)
- Tranilast Impurity 12 (CAS CATO-C4X-252912)
- Tranilast Impurity 11 (CAS CATO-C4X-252911)
- Tranilast impurity 6 (CAS 343783-68-6)
- Tranilast Impurity 1 (CAS 70806-55-2)
- Tranilast Impurity 2 (CAS 91920-58-0)
- Tranilast (CAS 53902-12-8)
Recommended Standards
- Sivelestat Impurity 14 (CAS CATO-C4X-212316)
- Belumosudil Impurity 38 (CAS CATO-C4X-298838)
- Norepinephrine Impurity 125 (CAS CATO-C4X-1514125)
- Atrasentan Impurity 4 (CAS CATO-C4X-33474)
- Coumarin 102 Impurity 5 (CAS CATO-C4X-24335)
- Erlotinib Impurity 29 (CAS CATO-C4X-106929)
- Nifuratel Impurity 10 (CAS 45378-62-9)
- 4-Methoxy-3-(trifluoromethyl)aniline hydrochloride (CAS 104044-32-8)
- 4-Chloro-N1-phenylbenzene-1,2-diamine (CAS 42837-74-1)
- 4-(tert-Butyl)-4H-1,2,4-triazole (CAS 36175-37-8)
- 1-[4-(trifluoromethyl)-1,3-thiazol-2-yl]ethan-1-amine (CAS 933698-96-5)
- 1-(2,3-Dihydro-1H-inden-2-yl)-3-methylurea (CAS 1690524-28-7)
- 1-(2-Phenylethyl)-1,4-diazepane dihydrochloride (CAS 198895-79-3)
- Semaglutide impurity 248 (CAS CATO-C4X-2226248)
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