Calcipotriol Impurity 32 CAS 87407-51-0
| CAS No. | 87407-51-0 |
| Molecular Formula | C28H48O2Si |
| Molecular Weight | 444.77 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, a hydroxyl group, an ether linkage, Calcipotriol Impurity 32 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 444.77 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 process- or degradation-related impurity, Calcipotriol Impurity 32 (CAS 87407-51-0, C28H48O2Si) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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.
CATO manufactures Calcipotriol Impurity 32 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C28H48O2Si |
| Molecular Weight | 444.77 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1981 |
Related Calcipotriol Standards
- Calcipotriol Impurity 38 (CAS CATO-C4X-122238)
- Calcipotriol-D4 (CAS 112965-21-6 (non-labelled))
- Calcipotriol Impurity 21 (CAS 143032-85-3)
- Calcipotriol Impurity 35 (CAS CATO-C4X-122235)
- Calcipotriol Impurity 36 (CAS CATO-C4X-122236)
- Calcipotriol - Impurity E (CAS 112849-14-6)
- Calcipotriol Impurity 12 (CAS 129831-99-8)
- Calcipotriol Impurity 27 (CAS CATO-C4X-122227)
Recommended Standards
- 2-(4-(2-[5S-(tert-Butyl-dimethyl-silanyloxy)-2-methylene-cyclohexylidene]-ethylidene)-7R-methyl-octahydro-inden-1-Ryl)-(S)-propan-1-ol (CAS 228113-80-2)
- 1-(4-(Tert-butyl)benzyl)-5,6-dichloro-2-(2-chloropyridin-3-yl)-1H-benzo[d]imidazole (CAS 338774-32-6)
- 4-(4-Chlorophenyl)-6-(3,4-dichlorophenyl)-2-(morpholin-4-yl)pyridine-3-carbonitrile (CAS 303984-54-5)
- 2,3,4-Triiodo-1H-pyrrole (CAS 56821-80-8)
- Revefenacin Impurity 79 (CAS CATO-C4X-203179)
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- n1,n1-Dimethyl-n2-((1-methyl-1h-pyrazol-4-yl)methyl)ethane-1,2-diamine (CAS 1152839-64-9)
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- 5-Isopropyl-3-methylpyrazolo[1,5-a]pyrimidine-7-carboxylic acid (CAS 1443279-67-1)
- Stresscopin-Related Peptide (human) (CAS 348626-74-4)
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