Evocalcet Impurity 28 CAS CATO-C4X-248528
| CAS No. | CATO-C4X-248528 |
| Molecular Formula | C21H28N2O2 |
| Molecular Weight | 340.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Evocalcet Impurity 28 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Evocalcet Impurity 28 (CAS CATO-C4X-248528) is a certified pharmaceutical impurity reference standard with the molecular formula C21H28N2O2 and a molecular weight of 340.46 g/mol.
Evocalcet Impurity 28 (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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | 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 |
| Nitrogen Atoms | 2 |
Related Evocalcet Standards
- Evocalcet Impurity 2 (CAS CATO-C4X-24852)
- Evocalcet Impurity 24 (CAS CATO-C4X-248524)
- Evocalcet Impurity 27 (CAS 1039631-63-4)
- Evocalcet Impurity 30 (CAS 1039631-66-7)
- Evocalcet Impurity 39 (CAS CATO-C4X-248539)
- Evocalcet Impurity 1 (CAS CATO-C4X-24851)
- Evocalcet Impurity 23 (CAS CATO-C4X-248523)
- Evocalcet impurity 57 (CAS CATO-C4X-248557)
Recommended Standards
- Acridorex (CAS 47487-22-9)
- Fluorometholone Impurity 4 (CAS 110664-42-1)
- Decloxizine (CAS 3733-63-9)
- Rasagiline Dimer Impurity (CAS CATO-C4X-191311)
- Tedizolid Impurity 6 (CAS 856867-41-9)
- Erlotinib Impurity 145 (CAS 1683583-42-7)
- Ammoxetine Impurity 15 (CAS CATO-C4X-335715)
- n-(2,6-Difluorobenzyl)-2-morpholinoethan-1-amine (CAS 1019569-30-2)
- Malonamide (CAS 108-13-4)
- 2-Chloro-n-(2-methoxy-5-nitrophenyl)acetamide (CAS 58795-63-4)
- N,N-Dimethylpyrimidin-5-amine (CAS 31401-46-4)
- 4-(4-amino-2,6-dimethylphenyl)morpholin-3-one (CAS 482308-12-3)
- 3-Diethylcarbamoyl-1,2,2-trimethyl-cyclopentanecarboxylic acid (CAS 73889-60-8)
- Semaglutide Impurity 163 (x TFA Salt) (CAS CATO-C4X-2226163)
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