Oxybutynin EP Impurity C HCl CAS 2724511-24-2
| CAS No. | 2724511-24-2 |
| Molecular Formula | C21H29NO3 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 379.93 g/mol gives Oxybutynin EP Impurity C HCl distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Oxybutynin EP Impurity C HCl (CAS 2724511-24-2, C21H29NO3HCl) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Oxybutynin EP Impurity C HCl (C21H29NO3HCl) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 379.93 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C21H29NO3 HCl |
| Molecular Weight | 379.93 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Oxybutynin Standards
- Oxybutynin EP Impurity F (CAS 10399-13-0)
- Oxybutynin hydrochloride-phenyl-d<SUB>5</SUB> (CAS 1173019-04-9)
- Oxybutynin-D11 Hydrochloride (CAS 1185151-95-4)
- (R)-Oxybutynin HCl (CAS 119618-21-2)
- (S)-Oxybutynin HCl (CAS 119618-22-3)
- Oxybutynin EP Impurity C (CAS 1199574-70-3)
- Oxybutynin Impurity N1 (Mixture of Diastereomers) (CAS 1199574-71-4)
- Oxybutynin Impurity 11 HCl (CAS 1199574-71-4 (free base))
Recommended Standards
- Ursodeoxycholic Acid impurity 75 (CAS 1516887-32-3)
- Pimobendan Impurity 7 (CAS CATO-C4X-24617)
- Adenosine Impurity 33 (CAS 62420-33-1)
- Methyl 2-(4-methyl-3-piperidyl)acetate (CAS 1860028-38-1)
- Methyl 4-((7-hydroxy-2-methyl-4-oxo-4H-chromen-3-yl)oxy)benzoate (CAS 315233-45-5)
- Methyl 3-amino-6-fluoropyrazine-2-carboxylate (CAS 356783-41-0)
- 1-(2-Fluorobenzoyl)-3-methylpiperazine (CAS 1240567-73-0)
- 3-(3-Methoxyphenyl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazol-6-amine (CAS 588719-28-2)
- 2-Chloro-N-cyclohexyl-4-fluoro-3-methoxybenzamide (CAS 2586126-81-8)
- D-Leu14-Tirzepatide (CAS CATO-CPTD788920)
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