Alfacalcidol Impurity 22 CAS CATO-C4X-139322
| CAS No. | CATO-C4X-139322 |
| Molecular Formula | C27H44O2 |
| Molecular Weight | 400.64 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.
Alfacalcidol Impurity 22 (CAS CATO-C4X-139322) is a certified pharmaceutical impurity reference standard with the molecular formula C27H44O2 and a molecular weight of 400.64 g/mol.
Alfacalcidol Impurity 22 (C27H44O2) contains a steroid core, a hydroxyl group, an ether linkage. 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 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).
CATO manufactures Alfacalcidol Impurity 22 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C27H44O2 |
| Molecular Weight | 400.64 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Alfacalcidol Standards
- Alfacalcidol (CAS 41294-56-8)
- Alfacalcidol EP Impurity A (CAS 65445-14-9)
- Alfacalcidol impurity 13 (CAS 58028-00-5)
- Alfacalcidol impurity 14 (CAS CATO-C4X-139314)
- Alfacalcidol impurity 15 (CAS 1279049-53-4)
- Alfacalcidol EP Impurity B (CAS 63181-13-5)
- Alfacalcidol Impurity 20 (CAS CATO-C4X-139320)
- Alfacalcidol Impurity 21 (CAS CATO-C4X-139321)
Recommended Standards
- Alfacalcidol Impurity 28 (CAS CATO-C4X-139328)
- Alfacalcidol Impurity 31 (CAS CATO-C4X-139331)
- Alfacalcidol Impurity 7 (CAS CATO-C4X-13937)
- Alfacalcidol impurity 9 (CAS CATO-C4X-13939)
- Retigabine Impurity 1 (CAS CATO-C4X-13141)
- Rotigotine EP Impurity B HCl (CAS 1231158-77-2)
- Brimonidine Impurity 15 (CAS 91147-46-5)
- 2,2,2-Trifluoro-N-(5-nitro-2-(pyrrolidin-1-yl)phenyl)acetamide (CAS 188997-85-5)
- Elacestrant Impurity 7 (CAS CATO-C4X-32327)
- 2-((4-Benzylpiperidin-1-yl)methyl)-3-hydroxy-6-(hydroxymethyl)-4H-pyran-4-one (CAS 380426-92-6)
- Antioxidant 245 (CAS 36443-68-2)
- 2-(4-(2-Amino-3-cyano-4H-benzo[h]chromen-4-yl)-2-methoxyphenoxy)-N-(m-tolyl)acetamide (CAS 336180-00-8)
- (4R,5R)-1,3-Bis(2-isopropylphenyl)-4,5-diphenyl-4,5-dihydro-1H-imidazol-3-ium tetrafluoroborate (CAS 372517-14-1)
- Semaglutide impurity 68 (CAS CATO-C4X-222668)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com