Empagliflozin Impurity 16 CAS 1620758-32-8
| CAS No. | 1620758-32-8 |
| Molecular Formula | C23H27ClO7 |
| Molecular Weight | 450.91 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 450.91 g/mol gives Empagliflozin Impurity 16 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Empagliflozin Impurity 16 (CAS 1620758-32-8) is a certified pharmaceutical impurity reference standard with the molecular formula C23H27ClO7 and a molecular weight of 450.91 g/mol.
Based on its molecular formula C23H27ClO7, Empagliflozin Impurity 16 contains a flavonoid core, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 450.91 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 | C23H27ClO7 |
| Molecular Weight | 450.91 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Cl-containing |
Related Empagliflozin Standards
- Empagliflozin impurity 02 (CAS 1620758-31-7&1620758-32-8)
- Empagliflozin (CAS 864070-44-0)
- Empagliflozin Impurity 1 (CAS 864070-43-9)
- Empagliflozin Impurity 10 (CAS 2452301-42-5)
- Empagliflozin Impurity 117 (CAS CATO-C4X-1065117)
- Empagliflozin Impurity 118 (CAS CATO-C4X-1065118)
- Empagliflozin Impurity 13 (CAS CATO-C4X-106513)
- Empagliflozin Impurity 131 (CAS CATO-C4X-1065131)
Recommended Standards
- Empagliflozin Impurity 137 (CAS CATO-C4X-1065137)
- Empagliflozin impurity 186 (CAS 2452301-28-7)
- Empagliflozin impurity 196 (CAS CATO-C4X-1065196)
- Empagliflozin impurity 197 (CAS CATO-C4X-1065197)
- Oseltamivir impurity 266 (CAS 2762080-42-0)
- Capivasertib Impurity 20 (CAS CATO-C4X-331220)
- Amodiaquine Impurity 9 (CAS CATO-C4X-24719)
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