Esomeprazole Impurity 65 CAS CATO-C4X-111265
| CAS No. | CATO-C4X-111265 |
| Molecular Formula | C16H17N3O2 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Esomeprazole Impurity 65 (C16H17N3O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 283.33 g/mol, it falls into the medium-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).
Esomeprazole Impurity 65 (CAS CATO-C4X-111265) is a certified pharmaceutical impurity reference standard with the molecular formula C16H17N3O2 and a molecular weight of 283.33 g/mol.
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 | C16H17N3O2 |
| Molecular Weight | 283.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
Related Esomeprazole Standards
- Esomeprazole Impurity 70 (CAS 103876-98-8)
- Esomeprazole Impurity 71 (CAS 1076199-93-3)
- Esomeprazole Impurity 79 (CAS 1080689-87-7)
- Esomeprazole Impurity 116 (CAS 109371-19-9)
- Esomeprazole Impurity 106 (CAS 110464-72-7)
- Esomeprazole Impurity 31 (CAS 1114596-75-6)
- EsoMeprazole (CAS 119141-88-7)
- Esomeprazole EP Impurity F (CAS 119141-89-8)
Recommended Standards
- Avanafil Impurity 134 (CAS CATO-C4X-1118134)
- Pretomanid Impurity 3 (CAS 2755727-09-2)
- Clobetasol Propionate EP Impurity K (CAS 75883-07-7)
- 1-(3,5-Diamino-1H-1,2,4-triazol-1-yl)ethan-1-one (CAS 86147-15-1)
- 2,2-Dimethyl-5-hexenoic Acid (CAS 58203-68-2)
- 2-(6-methoxypyridin-3-yl)ethan-1-amine dihydrochloride (CAS 812639-28-4)
- [4-(methoxymethyl)thiophen-2-yl]methanamine (CAS 893745-01-2)
- 2-Hydroxy-3,4-dimethoxy-6-methylbenzaldehyde (CAS 22383-86-4)
- 2-(Azetidin-3-yl)-3-bromo-5-fluoropyridine hydrochloride (CAS 1823904-30-8)
- Semaglutide impurity 47 (CAS CATO-C4X-222647)
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