Calcipotriol Impurity 30 CAS 115648-68-5
| CAS No. | 115648-68-5 |
| Molecular Formula | C39H66O3Si2 |
| Molecular Weight | 639.11 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 639.11 g/mol gives Calcipotriol Impurity 30 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Calcipotriol Impurity 30 (CAS 115648-68-5) is a certified pharmaceutical impurity reference standard with the molecular formula C39H66O3Si2 and a molecular weight of 639.11 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system, Calcipotriol Impurity 30 is typically off-white to pale yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 639.11 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.
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 | C39H66O3Si2 |
| Molecular Weight | 639.11 g/mol |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
Related Calcipotriol Standards
- Calcipotriol Impurity 11 (CAS 112849-17-9)
- Calcipotriol Impurity 29 (CAS CATO-C4X-122229)
- Calcipotriol Impurity 31 (CAS 866406-02-2)
- Calcipotriol Impurity 23 (CAS 1630745-25-3)
- Calcipotriol Impurity 51 (CAS 910133-69-6)
- Calcipotriol Impurity 10 (CAS 112849-27-1)
- Calcipotriol EP Impurity F (CAS 112875-61-3)
- Calcipotriol Impurity 17 (CAS 115540-28-8)
Recommended Standards
- (SP-5-13)-Chloro[[2,2′-[(1R,2R)-1,2-cyclohexanediylbis[(nitrilo-κN)methylidyne]]bis[4,6-bis(1,1-dimethylethyl)phenolato-κO]](2-)]cobalt (CAS 376652-60-7)
- (SP-5-13)-Chloro[[2,2′-[(1S,2S)-1,2-cyclohexanediylbis[(nitrilo-κN)methylidyne]]bis[4,6-bis(1,1-dimethylethyl)phenolato-κO]](2-)]cobalt (CAS 630404-46-5)
- Cholesteryl heptadecanoate (CAS 24365-37-5)
- (2R,3R,4R)-5-(((((2R,3S,4R,5R)-5-(6-Amino-9H-purin-9-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methoxy)(phosphonooxy)phosphoryl)oxy)-3,4-dihydroxy-1-oxopentan-2-yl dihydrogen phosphate (CAS 53595-18-9)
- Desloratadine Impurity 34 (CAS CATO-C4X-143034)
- Blonanserin Impurity 11 (CAS CATO-C4X-111011)
- Ribociclib Impurity 23 (CAS CATO-C4X-310023)
- 3-(4-Methoxyphenyl)-1H-pyrazole-5-carbaldehyde (CAS 862816-08-8)
- 3-Fluoro-2-methyl-4-nitrophenol (CAS 1804491-81-3)
- N-(4-Fluorobenzo[d]thiazol-2-yl)pentanamide (CAS 868368-72-3)
- cis-2-methylazetidin-3-ol;hydrochloride (CAS 1354352-24-1)
- 4-Amino-6,8-dichloro-2-methylquinoline (CAS 917562-01-7)
- Epinastine Impurity 34 (CAS 76838-40-9)
- Thymopoietin II Peptide Fragment (CAS 56795-64-3)
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