Tadalafil Impurity 113 CAS 68807-89-6
| CAS No. | 68807-89-6 |
| Molecular Formula | C11H11N3O3 |
| Molecular Weight | 233.22 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Tadalafil Impurity 113 (CAS 68807-89-6, C11H11N3O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Tadalafil Impurity 113 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 233.22 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), Tadalafil Impurity 113 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C11H11N3O3 |
| Molecular Weight | 233.22 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >80% |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 3 |
Related Tadalafil Standards
- Tadalafil Impurity 85 (CAS 7479-05-2)
- Tadalafil Impurity 164 (CAS 58979-02-5)
- 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 55 (CAS 2280-01-5)
- Tadalafil Impurity 161 (CAS CATO-C4X-1087161)
Recommended Standards
- 933940-12-6 5-Amino-3-(2-methoxyphenyl)isoxazole-4-carboxamide MFCD15146466 (CAS 933940-12-6)
- Lenvatinib Impurity 149 (CAS CATO-C4X-1140149)
- 68019-66-9 1-[(4-Methoxyphenyl)methyl]-4-nitro-1H-imidazole DTXSID50356488 (CAS 68019-66-9)
- Lenvatinib Impurity 17 (CAS 205448-65-3)
- Pramipexole Impurity 43 (CAS 1001648-75-4)
- Tapentadol impurity 5 (CAS CATO-C4X-20995)
- Dasatinib Impurity 23 (CAS CATO-C4X-160723)
- 1-(Azetidin-3-yl)-2-phenylethanone hydrochloride (CAS 1425334-95-7)
- Fmoc-D-Lys(Trt)-OH (B-3990.0001) (CAS 1272755-60-8)
- 1-(6-Methoxybenzo[d]oxazol-2-yl)ethanone (CAS 1806492-37-4)
- Mequitazine Impurity 1 (CAS 144827-80-5)
- 3-Oxo-3-phenylpropyl 2-(pyrrolidin-3-yl)acetate (CAS 828259-35-4)
- tert-Butyl 4-hydroxy-3-methylpiperidine-1-carboxylate (CAS 181269-70-5)
- Semaglutide Impurity 246 (CAS CATO-C4X-2226246)
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