Alfacalcidol impurity 15 CAS 1279049-53-4
| CAS No. | 1279049-53-4 |
| Molecular Formula | C27H44O2 |
| Molecular Weight | 400.64 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Alfacalcidol impurity 15 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.
Alfacalcidol impurity 15 (CAS 1279049-53-4) is a certified pharmaceutical impurity reference standard with the molecular formula C27H44O2 and a molecular weight of 400.64 g/mol.
Owing to a steroid core, a hydroxyl group, an ether linkage, Alfacalcidol impurity 15 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 400.64 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
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 |
| CAS Registry Year (est.) | 1990 |
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 EP Impurity B (CAS 63181-13-5)
- Alfacalcidol Impurity 20 (CAS CATO-C4X-139320)
- Alfacalcidol Impurity 21 (CAS CATO-C4X-139321)
- Alfacalcidol Impurity 22 (CAS CATO-C4X-139322)
Recommended Standards
- 56792-59-7 27-hydroxy cholestenone (CAS 56792-59-7)
- Alfacalcidol Impurity 28 (CAS CATO-C4X-139328)
- Phenylgallium diiodide (CAS 90753-44-9)
- Alfacalcidol Impurity 31 (CAS CATO-C4X-139331)
- Rosuvastatin EP Impurity L (Mixture of Diastereomers) Sodium Salt (CAS CATO-C4X-1169175)
- Osimertinib Impurity N4 (CAS 1956306-73-2)
- Elagolix Impurity 108 (CAS 2486454-64-0)
- [6-[4-(Trifluoromethyl)phenyl]-3-pyridyl]methanol (CAS 356058-13-4)
- (2R,3S,4S)-2-(Aminomethyl)-5-methoxytetrahydrofuran-3,4-diol (CAS 243131-83-1)
- 4-[4-[4-(Methoxymethoxy)phenyl]-1-piperazinyl]benzenamine-d4 (CAS 1246816-20-5)
- 4-(3-chlorophenyl)-4-methylpiperidine hydrochloride (CAS 1803581-63-6)
- 2-(4-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)octahydro-2H-pyrido[1,2-a]pyrazine (CAS 1354911-18-4)
- 5-Methyl-1-phenyl-1H-pyrazol-4-ol (CAS 89193-19-1)
- Angiotensin III Antipeptide (CAS 133605-55-7)
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