Alfacalcidol Impurity 6 CAS CATO-C4X-13936
| CAS No. | CATO-C4X-13936 |
| Molecular Formula | C31H48O6 |
| Molecular Weight | 516.71 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Alfacalcidol Impurity 6.
Alfacalcidol Impurity 6 (CAS CATO-C4X-13936) is a certified pharmaceutical impurity reference standard with the molecular formula C31H48O6 and a molecular weight of 516.71 g/mol.
Based on its molecular formula C31H48O6, Alfacalcidol Impurity 6 contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 516.71 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C31H48O6 |
| Molecular Weight | 516.71 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >90% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Alfacalcidol Standards
- Alfacalcidol Impurity 23 (CAS CATO-C4X-139323)
- Alfacalcidol Impurity 27 (CAS CATO-C4X-139327)
- Alfacalcidol Impurity 32 (CAS CATO-C4X-139332)
- Alfacalcidol Impurity 25 (CAS CATO-C4X-139325)
- Alfacalcidol Impurity 33 (CAS CATO-C4X-139333)
- Alfacalcidol Impurity 30 (CAS CATO-C4X-139330)
- Alfacalcidol EP Impurity C (CAS 82266-85-1)
- Alfacalcidol Impurity N1 (CAS 71726-02-8)
Recommended Standards
- Phytolaccagenic Acid (CAS 54928-05-1)
- Fusidic Acid (CAS 6990-06-3)
- Cyclopentyl 4-(morpholinomethyl)phenyl ketone (CAS 898770-77-9)
- 6-Bromo-3-(2-chloro-5-(trifluoromethyl)pyrimidin-4-yl)-1-(phenylsulfonyl)-1H-indole (CAS 2173193-44-5)
- Tacrolimus Impurity 40 (CAS CATO-C4X-130040)
- Latamoxef Impurity 17 (CAS CATO-C4X-179817)
- Raltitrexed Impurity 4 (CAS 39978-57-9)
- 1-Methoxy-4-(4-methoxyphenyl)isoquinolin-5-ol (CAS 656233-93-1)
- (E)-3,7-Dimethylocta-2,6-dien-1-yl 3-methylbutanoate (CAS 109-20-6)
- tert-Butyl (2-(prop-2-yn-1-yloxy)ethyl)carbamate (CAS 634926-63-9)
- (2,2-Bis(methoxycarbonyl)cyclopropyl)boronic acid (CAS 2225151-98-2)
- 1-(2-Chloroethyl)-3-(4-(methylthio)phenyl)urea (CAS 13908-50-4)
- (2,5-DImethoxy-phenyl)-methoxy-dImethyl-sIlane (CAS 1244855-93-3)
- Tirzepatide Impurity 22 X TFA Salt (CAS CATO-C4X-324022)
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