Calcifediol Impurity 11 CAS CATO-C4X-189211
| CAS No. | CATO-C4X-189211 |
| Molecular Formula | C27H44O2 |
| Molecular Weight | 400.64 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Calcifediol Impurity 11 (CAS CATO-C4X-189211) is a certified pharmaceutical impurity reference standard with the molecular formula C27H44O2 and a molecular weight of 400.64 g/mol.
Based on its molecular formula C27H44O2, Calcifediol Impurity 11 contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 400.64 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).
As a certified reference material (CRM), Calcifediol Impurity 11 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 | 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 Calcifediol Standards
- Calcifediol EP Impurity C (CAS 39932-44-0)
- Calcifediol Impurity 32 (CAS 2963746-77-0)
- Calcifediol Impurity 1 (CAS 36149-00-5)
- Calcifediol Monohydrate EP Impurity A (CAS 61585-29-3)
- Calcifediol Impurity 12 (CAS 23357-18-8)
- Calcifediol EP Impurity B (CAS 22145-68-2)
- Calcifediol Impurity 14 (CAS CATO-C4X-189214)
- Calcifediol EP Impurity D (CAS 1233749-00-2)
Recommended Standards
- 7,8-Epoxy-vitamin D3 (CAS 89231-90-3)
- Cholecalciferol Impurity 32 (CAS 89231-92-5)
- Calcitriol Impurity 61 (CAS CATO-C4X-151061)
- Calcifediol Impurity 5 (CAS 69556-15-6)
- Lurasidone Impurity 52 (CAS 1807983-63-6)
- Benzocaine EP Impurity G (CAS 150-13-0)
- Aztreonam impurity 66 (CAS CATO-C4X-152266)
- 3-(Phenylsulfonyl)propanamide (CAS 10154-74-2)
- Potassium trifluoro((4-methylpiperidin-1-yl)methyl)borate (CAS 1602719-53-8)
- 1-(Pyridin-2-yl)propan-2-amine hydrochloride (CAS 18528-28-4)
- 3-(5-Amino-1,3,4-oxadiazol-2-yl)benzonitrile (CAS 1016521-87-1)
- 6,8-dimethylisoquinoline (CAS 67878-83-5)
- N-(4-(2-(Benzo[d]thiazol-2-ylamino)-2-oxoethyl)thiazol-2-yl)benzamide (CAS 941898-69-7)
- Antifreeze Polypeptide 6 (winter flounder) trifluoroacetate salt (CAS 122604-16-4)
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