Oxybutynin Impurity 9 CAS CATO-C4X-19729
| CAS No. | CATO-C4X-19729 |
| Molecular Formula | C37H47NO6 |
| Molecular Weight | 601.77 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Oxybutynin Impurity 9 (CAS CATO-C4X-19729) is a certified pharmaceutical impurity reference standard with the molecular formula C37H47NO6 and a molecular weight of 601.77 g/mol.
Oxybutynin Impurity 9 (C37H47NO6) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C37H47NO6 |
| Molecular Weight | 601.77 g/mol |
| Purity | >95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Oxybutynin Standards
- Oxybutynin Impurity 14 (CAS CATO-C4X-197214)
- Oxybutynin Impurity 8 (CAS CATO-C4X-19728)
- Oxybutynin N- oxide (CAS 80976-68-7)
- Oxybutynin Impurity 3 (CAS 1215677-72-7)
- R-Oxybutynin D10 (CAS CATO-C4X-197215)
- S-Oxybutynin D10 (CAS CATO-C4X-197216)
- Oxybutynin Impurity 7 (CAS CATO-C4X-19727)
- Oxybutynin Impurity N1 (Mixture of Diastereomers) (CAS 1199574-71-4)
Recommended Standards
- N-[4-[2-[[2-[4-[bis(methylsulfonyl)amino]phenoxy]-1,1,2,2-tetradeuterioethyl]-methylamino]ethyl]phenyl]-N-methylsulfonylmethanesulfonamide (CAS 1397192-78-7)
- Tris(2,2,6,6-tetramethyl-3,5-heptanedione)chromium(III) (CAS 14434-47-0)
- Bosentan Impurity 12 (CAS CATO-C4X-156412)
- N-[1-[[2-(Dimethylamino)ethyl]amino]-2-methyl-1-oxo-2-propyl]-4-[4-[2-methyl-5-[(2S,3R,4R,5S,6R)-3,4,5-trihydroxy-6-(methylthio)-2-tetrahydropyranyl]benzyl]phenyl]butanamide (CAS 1610954-97-6)
- Articaine EP Impurity J (CAS 1160919-46-9)
- Ezetimibe Impurity 119 (CAS 914777-32-5)
- Roflumilast Impurity 11 (CAS CATO-C4X-204711)
- 4-Bromo-3-(difluoromethyl)-5-fluoropyridine-2-acetic acid (CAS 1806062-03-2)
- Ethyl 6-(2,2,2-trifluoroethoxy)nicotinate (CAS 1263276-73-8)
- Tert-butyl 7-formyl-4-azaspiro[2.5]Octane-4-carboxylate (CAS 2306277-79-0)
- 1-(Pyridin-2-yl)-1,4-diazepane dihydrochloride (CAS 864754-31-4)
- 2-Amino-6-cyclopropylbenzonitrile (CAS 1093203-67-8)
- 3-(((1h-Benzo[d]imidazol-2-yl)methyl)sulfonyl)propanoic acid (CAS 1092291-31-0)
- Tirzepatide Impurity 59 (CAS CATO-C4X-324059)
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