Tadalafil Impurity 155 CAS 691871-71-3
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 691871-71-3 |
| Molecular Formula | C28H23N3O4 |
| Molecular Weight | 465.50 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
High-purity Tadalafil Impurity 155 (CAS 691871-71-3) pharmacopoeial impurity standards reference standard. Molecular formula: C28H23N3O4. Molecular weight: 465.50 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C28H23N3O4 |
| Molecular Weight | 465.50 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 3 |
Related Tadalafil Standards
- Tadalafil Impurity 109 (CAS CATO-C4X-1087109)
- Tadalafil Impurity 60 (CAS 1588526-67-3)
- Tadalafil Impurity 93 (CAS CATO-C4X-108793)
- Tadalafil Impurity 26 (CAS 1598416-08-0)
- Tadalafil Impurity 110 (CAS CATO-C4X-1087110)
- Tadalafil Impurity 105 (CAS CATO-C4X-1087105)
- Tadalafil Impurity 153 (CAS CATO-C4X-1087153)
- Tadalafil impurity 125 (CAS CATO-C4X-1087125)
Recommended Standards
- 2,2'-(((4R,7S,12R)-7-amino-6,10-dioxo-1,2-dithia-5,11-diazacyclotridecane-4,12-dicarbonyl)bis(azanediyl))diacetic acid (CAS CATO-C3D-262909)
- Avanafil Impurity 69 (CAS CATO-C4X-111869)
- Ethyl 2-(4-(fluorosulfonyl)phenyl)-4-oxo-1,4-dihydroquinoline-6-carboxylate (CAS 80789-71-5)
- Belumosudil Impurity 55 (CAS CATO-C4X-298855)
- Bupropion Morpholinol Impurity (HCl Salt) (CAS 106083-71-0)
- 9-(1-Phenylethyl)-1H-purin-6(9H)-one (CAS 34396-98-0)
- Gemfibrozil Impurity N1 (CAS 63258-18-4)
- 4-(Pyridin-4-yl)pyrrolidin-2-one (CAS 1268132-89-3)
- 1-(2-Bromoethoxy)-2-ethylbenzene (CAS 915922-20-2)
- Liraglutide Impurity 28 (CAS CATO-C4X-199228)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 13829788188 / jacky.chen@cato-chem.com