Oxybutynin Impurity A CAS CATO-C4X-197212
| CAS No. | CATO-C4X-197212 |
| Molecular Formula | C22H35NO3 |
| Molecular Weight | 361.52 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 361.52 g/mol gives Oxybutynin Impurity A distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Oxybutynin Impurity A (CAS CATO-C4X-197212, C22H35NO3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Oxybutynin Impurity A (C22H35NO3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 361.52 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C22H35NO3 |
| Molecular Weight | 361.52 g/mol |
| Appearance | Off-white to pale 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 |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Oxybutynin Standards
- Oxybutynin Impurity N1 (Mixture of Diastereomers) (CAS 1199574-71-4)
- Oxybutynin impurity 10 (CAS CATO-C4X-197210)
- Oxybutynin (CAS 5633-20-5)
- Oxybutynin Impurity 7 (CAS CATO-C4X-19727)
- R-Oxybutynin D10 (CAS CATO-C4X-197215)
- S-Oxybutynin D10 (CAS CATO-C4X-197216)
- Oxybutynin Impurity 3 (CAS 1215677-72-7)
- Oxybutynin EP Impurity B (CAS 14943-53-4)
Recommended Standards
- 2H-1-Benzopyran-2-one, 7-(diethylamino)-3-(1-methyl-1H-benzimidazol-2-yl)- 41044-12-6 7-(Diethylamino)-3-(1-methyl-1H-benzimidazol-2-yl)-2H-chromen-2-one 7-(diethylamino)-3-(1-methylbenzimidazol-2-yl)chromen-2-one Coumarin 30 NSC290433 (CAS 41044-12-6)
- Mirogabalin Impurity 201 (CAS CATO-C4X-2924201)
- 9-(Bis(methylthio)methylene)-10-phenyl-9,10-dihydroacridine (CAS 555152-94-8)
- 1’-Oxo Perazine-d8 (CAS 1246820-86-9)
- Ketoprofen EP Impurity I (CAS 21288-34-6)
- Mebeverine EP Impurity I (CAS CATO-C4X-168711)
- Pirfenidone Impurity 28 (CAS 856952-50-6)
- 2-Bromophenyl trifluoromethanesulfonate (CAS 129112-25-0)
- Methyl 2-(pyrrolidin-3-ylsulfonyl)acetate (CAS 1706459-89-3)
- 1-(2-(Piperazin-1-yl)acetyl)pyrrolidin-2-one 2,2,2-trifluoroacetate (CAS 1354953-64-2)
- 2,2-Difluoro-2-(pyridin-3-yl)acetic acid (CAS 1247461-08-0)
- 2,3,5,6,8,9-Hexahydro-[1,4,7,10]tetraoxacyclododecino[2,3-g]quinolin-15(12H)-one (CAS 1355620-88-0)
- 3-Ethynylazetidine (CAS 1207840-08-1)
- Semaglutide impurity 199 (CAS CATO-C4X-2226199)
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