Dapagliflozin Impurity 166 CAS CATO-C4X-1138166
| CAS No. | CATO-C4X-1138166 |
| Molecular Formula | C19H23ClO |
| Molecular Weight | 302.84 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Dapagliflozin Impurity 166 (CAS CATO-C4X-1138166) is a certified pharmaceutical impurity reference standard with the molecular formula C19H23ClO and a molecular weight of 302.84 g/mol.
Structurally, Dapagliflozin Impurity 166 (C19H23ClO) contains a steroid core, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 302.84 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).
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.
Physical & Chemical Properties
| Molecular Formula | C19H23ClO |
| Molecular Weight | 302.84 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
Related Dapagliflozin Standards
- Dapagliflozin impurity 217 (CAS 2133407-74-4)
- Dapagliflozin Impurity 89 (CAS 5032-10-0)
- Dapagliflozin Impurity 193 (CAS CATO-C4X-1138193)
- Dapagliflozin Impurity 148 (CAS 342043-51-0)
- Dapagliflozin Impurity 38 (CAS 2132-59-4)
- Dapagliflozin Impurity 45 (CAS 864070-18-8)
- Dapagliflozin Impurity 164 (CAS CATO-C4X-1138164)
- Dapagliflozin Impurity 173 (CAS CATO-C4X-1138173)
Recommended Standards
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- Ethyl 5-bromo-8-hydroxy-7-methyl-2-oxo-2H-cyclohepta[b]furan-3-carboxylate (CAS 2222-25-5)
- Diethyl (3-oxocyclopentyl)phosphonate (CAS 7750-01-8)
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- 3-(3,4-Dimethylphenyl)-5-phenyl-1H-pyrazole (CAS 1439307-35-3)
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