Cholecalciferol Impurity 28 CAS CATO-C4X-158628
| CAS No. | CATO-C4X-158628 |
| Molecular Formula | C27H43Cl |
| Molecular Weight | 403.08 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Cholecalciferol Impurity 28 is closely related to chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
As a process- or degradation-related impurity, Cholecalciferol Impurity 28 (CAS CATO-C4X-158628, C27H43Cl) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C27H43Cl, Cholecalciferol Impurity 28 contains chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 403.08 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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.
As a certified reference material (CRM), Cholecalciferol 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.
Physical & Chemical Properties
| Molecular Formula | C27H43Cl |
| Molecular Weight | 403.08 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| 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 |
| Halogen Content | Cl-containing |
Related Cholecalciferol Standards
- Cholecalciferol Impurity 32 (CAS 89231-92-5)
- Cholecalciferol impurity 16 (CAS 86307-40-6)
- Cholecalciferol Impurity 26 (CAS CATO-C4X-158626)
- Cholecalciferol impurity 18 (CAS 2227309-94-4)
- Cholecalciferol-d6 (Vitamin D3-d6) (CAS 118584-54-6)
- Cholecalciferol impurity 22 (CAS CATO-C4X-158622)
- Cholecalciferol impurity 23 (CAS 168609-17-4)
- Cholecalciferol impurity 24 (CAS 300692-92-6)
Recommended Standards
- 5-Bromo-Uridine-5-monophosphate disodium salt (CAS 2149-79-3)
- Di-n-butyldimethacrylatetin (CAS 15257-25-7)
- Tributylstannyl 2,2,2-trifluoroacetate (CAS 7299-28-7)
- (E)-3-chloro-2-((2-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)hydrazono)methyl)-5-(trifluoromethyl)pyridine (CAS 251310-63-1)
- Cinepazide Impurity 7 (CAS 20266-01-7)
- Levofloxacin Impurity 54 (CAS CATO-C4X-137154)
- Gadodiamide Impurity 2 (CAS CATO-C4X-31432)
- 3-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[d]oxazol-2(3H)-one (CAS 1220696-32-1)
- N-(2-Phenylethyl)-1,3-benzothiazol-2-amine (CAS 439215-15-3)
- Bisoprolol Impurity 110 (CAS CATO-C4X-1247110)
- 2-(Chloromethyl)-4-methoxythieno[3,2-d]pyrimidine (CAS 1421311-90-1)
- 4-(3-Amino-4-methyl-1h-pyrazol-1-yl)benzonitrile (CAS 1249427-15-3)
- N-(3-(3-((tert-butyldimethylsilyl)oxy)propyl)pyridin-2-yl)pivalamide (CAS 1228665-70-0)
- Tirzepatide Impurity 46 (CAS CATO-C4X-324046)
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