Tadalafil Impurity 131 CAS 209120-51-4
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 209120-51-4 |
| Molecular Formula | C8H5NO5 |
| Molecular Weight | 195.13 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Tadalafil Impurity 131 (CAS 209120-51-4) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C8H5NO5. Molecular weight: 195.13 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C8H5NO5 |
| Molecular Weight | 195.13 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2016 |
| Nitrogen Atoms | 1 |
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Recommended Standards
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- Lumateperone Impurity N4 (CAS 313369-17-4)
- Methoxamine Impurity 25 (CAS CATO-C4X-202225)
- 1,1'-Biphenyl,4,4'-bis(4-ethylcyclohexyl)- (CAS 91538-79-3)
- 5α-Pregnan-3α-ol-20-one-17α,21,21,21-d4 (CAS 203805-85-0)
- 7-Chloro-5-oxo-4,5-dihydrothieno[3,2-b]pyridine-6-carbaldehyde (CAS 2446611-60-3)
- 2-Amino-N-isopropylethane-1-sulfonamide oxalate (CAS 1322604-91-0)
- Lixisenatide (CAS 320367-13-3（free base）)
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