Calcitriol Impurity 22 CAS 139239-33-1
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 139239-33-1 |
| Molecular Formula | C34H62O3Si2 |
| Molecular Weight | 575.03 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Calcitriol Impurity 22 (CAS 139239-33-1), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C34H62O3Si2. Molecular weight: 575.03 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C34H62O3Si2 |
| Molecular Weight | 575.03 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
Related Calcitriol Standards
- Calcitriol Impurity 21 (CAS 115648-67-4)
- pre-Calcitriol PTAD Adduct (impurity) (CAS 86307-31-5)
- Calcitriol Impurity 66 (CAS CATO-C4X-151066)
- Pro-Calcitriol PTAD Adduct (CAS 137342-95-1)
- Calcitriol EP Impurity C(Mixture of Diastereomers) (CAS 86307-44-0)
- Calcitriol Impurity 15 (CAS 132054-64-9)
- Calcitriol Impurity 16 (CAS 98728-26-8)
- Calcitriol impurity 01 (CAS 2239312-26-4)
Recommended Standards
- Calcipotriol Impurity 28 (CAS CATO-C4X-122228)
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- Relugolix Impurity 66 (CAS CATO-C4X-242966)
- Vilanterol Impurity 37 (CAS 452339-70-7)
- 4-(2-Chloro-4-nitrophenoxy)piperidinehydrochloride (CAS 1220037-73-9)
- 2-(Chloromethyl)-6-cyano-5-(difluoromethyl)-3-(trifluoromethyl)pyridine (CAS 1805038-21-4)
- N-(Biotin-PEG4)-N-bis(PEG4-acid) (hydrochloride) (CAS 2112731-49-2)
- 4,5-Dichloro-2-methylthiophenol (CAS 1806348-49-1)
- Serpent Peptide 2AcOH (CAS 823202-99-9(free base))
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 13829788188 / jacky.chen@cato-chem.com