Evocalcet Impurity 27 CAS 1039631-63-4
| CAS No. | 1039631-63-4 |
| Molecular Formula | C21H28N2O2 |
| Molecular Weight | 340.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Evocalcet Impurity 27 (CAS 1039631-63-4) is a certified pharmaceutical impurity reference standard with the molecular formula C21H28N2O2 and a molecular weight of 340.46 g/mol.
Evocalcet Impurity 27 (C21H28N2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C21H28N2O2 |
| Molecular Weight | 340.46 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 2 |
Related Evocalcet Standards
- Evocalcet Impurity 2 (CAS CATO-C4X-24852)
- Evocalcet Impurity 24 (CAS CATO-C4X-248524)
- Evocalcet Impurity 28 (CAS CATO-C4X-248528)
- Evocalcet Impurity 30 (CAS 1039631-66-7)
- Evocalcet Impurity 39 (CAS CATO-C4X-248539)
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