Tadalafil Impurity 164 CAS 58979-02-5
| CAS No. | 58979-02-5 |
| Molecular Formula | C13H12O4 |
| Molecular Weight | 232.23 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Tadalafil Impurity 164 (C13H12O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 232.23 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).
CATO supplies Tadalafil Impurity 164 (CAS 58979-02-5), a pharmacopoeial impurity reference standard (molecular formula C13H12O4, MW 232.23 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.
CATO manufactures Tadalafil Impurity 164 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 | C13H12O4 |
| Molecular Weight | 232.23 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.) | 1973 |
Related Tadalafil Standards
- Tadalafil Impurity 85 (CAS 7479-05-2)
- Tadalafil Impurity 113 (CAS 68807-89-6)
- Tadalafil Impurity 29 (CAS CATO-C4X-1087129)
- Tadalafil Impurity N27 (CAS 21753-16-2)
- Tadalafil Impurity 117 (CAS CATO-C4X-1087117)
- Tadalafil Impurity 119 (CAS CATO-C4X-1087119)
- Tadalafil Impurity 161 (CAS CATO-C4X-1087161)
- Tadalafil Impurity 36 (CAS 4299-70-1)
Recommended Standards
- Triethyl Methanetricarboxylate (CAS 6279-86-3)
- Emtricitabine impurity 61 (CAS 1055312-45-2)
- 4-(3,5-Dioxocyclohexyl)benzoic acid 75618-40-5 9265AE C13H12O4 (CAS 75618-40-5)
- Diflunisal impurity 5 (CAS 53591-79-0)
- Cariprazine Impurity 1 (CAS 791778-53-5)
- Dyclonine Impurity 17 (CAS CATO-C4X-188117)
- Nicorandil Impurity 55 (CAS 3612-79-1)
- Iguratimod Impurity 35 (CAS CATO-C4X-182635)
- 2-Amino-1-(4-(tert-butyl)phenyl)ethanol (CAS 41870-80-8)
- Tert-butyl lysinate (CAS 1393602-74-8)
- 3-Chloro-1-(difluoromethyl)pyrazin-2(1H)-one (CAS 1603237-94-0)
- 1-Propanone, 1-(3-fluoro-5-methylphenyl)-2-methyl- (CAS 1352210-45-7)
- Phenyl4-ethylcyclohexanecarboxylate (CAS 91988-52-2)
- Des-Ile17-Tirzepatide (CAS CATO-CPTD788956)
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