Paricalcitol Impurity 33 CAS CATO-C4X-138733
| CAS No. | CATO-C4X-138733 |
| Molecular Formula | C27H46O3 |
| Molecular Weight | 418.65 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Paricalcitol Impurity 33 (CAS CATO-C4X-138733), a pharmacopoeial impurity reference standard (molecular formula C27H46O3, MW 418.65 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Paricalcitol Impurity 33 (C27H46O3) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 418.65 g/mol, it falls into the moderately-high-molecular-weight range. 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.
CATO manufactures Paricalcitol Impurity 33 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 | C27H46O3 |
| Molecular Weight | 418.65 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Paricalcitol Standards
- Paricalcitol Impurity 37 (CAS 1154606-20-8)
- Paricalcitol 22-Z (CAS CATO-C4X-13871)
- Paricalcitol Impurity 2 (CAS 132015-95-3)
- Paricalcitol Impurity 3 (CAS 1884139-61-0)
- Paricalcitol (CAS 131918-61-1)
- Paricalcitol Impurity 38 (CAS CATO-C4X-138738)
- Paricalcitol Impurity 4 (CAS 2230789-87-2)
- Paricalcitol Impurity 43 (CAS CATO-C4X-138743)
Recommended Standards
- 64907-21-7 7beta,25-dihydroxycholesterol (CAS 64907-21-7)
- CAS 55648-25-4 (CAS 55648-25-4)
- Alfacalcidol impurity 10 (CAS 174176-73-9)
- 240129-43-5 7beta,27-dihydroxycholesterol (CAS 240129-43-5)
- Eperisone Impurity N1 (CAS 70639-76-8)
- Penehyclidine impurity 20 (CAS CATO-C4X-130420)
- Baloxavir Impurity 123 (CAS CATO-C4X-2108123)
- 1-(2-Methyl-4-propoxyphenyl)ethanol (CAS 1048918-47-3)
- 1-(5-(tert-Butylthio)-3-methylpyridin-2-yl)-4-ethylpiperazine (CAS 1355226-03-7)
- (S)-3-((tert-Butoxycarbonyl)amino)-4-(3-fluorophenyl)butanoic acid (CAS 270596-51-5)
- 5-Chloro-6-fluoro-1H-indole-2-carboxylic acid (CAS 169674-55-9)
- 5-Bromo-2-chloro-N-isopropylnicotinamide (CAS 1250751-43-9)
- 4-Chloro-3-[(2,6-dimethylmorpholin-4-yl)sulfonyl]benzoic acid (CAS 731826-53-2)
- Semaglutide impurity 211 (CAS CATO-C4X-2226211)
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