Calcitriol impurity 55 CAS CATO-C4X-151055
| CAS No. | CATO-C4X-151055 |
| Molecular Formula | C27H44O3 |
| Molecular Weight | 416.64 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Calcitriol impurity 55 (CAS CATO-C4X-151055) is a certified pharmaceutical impurity reference standard with the molecular formula C27H44O3 and a molecular weight of 416.64 g/mol.
Based on its molecular formula C27H44O3, Calcitriol impurity 55 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 416.64 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).
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 | C27H44O3 |
| Molecular Weight | 416.64 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| 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 Calcitriol Standards
- Calcitriol (CAS 32222-06-3)
- Calcitriol Impurity 25 (CAS 134523-84-5)
- Calcitriol Impurity 26 (CAS 57102-09-7)
- Calcitriol Impurity 27 (CAS CATO-C4X-151027)
- Calcitriol Impurity 29 (CAS 96614-28-7)
- Calcitriol Impurity 31 (CAS 96862-25-8)
- Calcitriol impurity 37 (CAS CATO-C4X-151037)
- Calcitriol Impurity 38 (CAS CATO-C4X-151038)
Recommended Standards
- Calcitriol EP Impurity B (CAS 66791-71-7)
- Calcitriol Impurity 58 (CAS CATO-C4X-151058)
- Calcitriol impurity 41 (CAS CATO-C4X-151041)
- Calcitriol Impurity 6 (CAS CATO-C4X-15106)
- Paraben Impurity 4 (CAS CATO-C4X-25694)
- Lefamulinum Impurity 7 (CAS CATO-C4X-30477)
- Fludarabine Phosphate EP Impurity C Disodium Salt (CAS CATO-C4X-184621)
- (3S,4S)-3-Methyl-2-oxa-8-azaspiro[4.5]decan-4-amine dihydrochloride (CAS 2055761-19-6)
- 2-(Dimethylamino)oxazol-4(5H)-one (CAS 15381-69-8)
- 3-(2,6-Dimethoxyphenyl)azetidin-3-ol (CAS 1596900-82-1)
- 2,3-Dimethyl-N-(4-methylpiperidin-3-yl)butanamide hydrochloride (CAS 1836880-74-0)
- Methyl 2-amino-2-(1-phenyl-1h-pyrazol-4-yl)acetate (CAS 1218630-45-5)
- Travoprost 15-EPi Diastereomer (CAS 1420791-14-5)
- Semaglutide impurity 109 (CAS CATO-C4X-2226109)
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