Cholesterol Impurity 40 CAS 64907-24-0
| CAS No. | 64907-24-0 |
| Molecular Formula | C29H44O3 |
| Molecular Weight | 440.66 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C29H44O3, Cholesterol Impurity 40 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 440.66 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Cholesterol Impurity 40 (CAS 64907-24-0), a pharmacopoeial impurity reference standard (molecular formula C29H44O3, MW 440.66 g/mol) used for the identification and quantification of trace impurities in APIs.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Cholesterol Impurity 40 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C29H44O3 |
| Molecular Weight | 440.66 g/mol |
| Appearance | Pale yellow to 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
Related Cholesterol Standards
- 7-Oxo Cholesterol 3-Acetate (CAS 809-51-8)
- Cholesterol Methyl Carbonate (CAS 15507-52-5)
- Cholesterol 3-Acetate-d7 (CAS 1345629-08-4)
- Cholesterol Chloroformate (CAS 7144-08-3)
- Cholesterol impurity 41 (CAS 1255-88-5)
- Cholesterol For Parenteral Use EP Impurity F (CAS 604-35-3)
- Cholesterol Impurity 39 (CAS 17137-70-1)
- Cholesterol Impurity 32 (CAS 51373-26-3)
Recommended Standards
- 9,9'-([2,2'-Bipyridine]-4,4'-diyl)bis(nonan-1-ol) (CAS 827605-89-0)
- Cloransulam-Methyl Impurity 12 (CAS 207801-50-1)
- 1-(5-Hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)octadecan-1-one (CAS 92593-06-1)
- 2,4-Dichloro-5-(5-chloro-2,4-dimethoxy-phenylsulfamoyl)-benzoic acid (CAS 380341-89-9)
- Rivaroxaban Impurity 143 (CAS CATO-C4X-1090143)
- Rivaroxaban Impurity 164 (CAS 1809279-97-7)
- Cinacalcet impurity 85 (CAS CATO-C4X-105985)
- 1-Amino-3-(4-(tert-butyl)phenyl)propan-2-ol (CAS 1225686-51-0)
- 1-(6-(Aminomethyl)pyridin-2-yl)-N,N-bis(pyridin-2-ylmethyl)methanamine (CAS 769952-01-4)
- ethyl 2-cyano-3-(quinolin-2-yl)propanoate (CAS 773086-23-0)
- N-[4-(Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]butanamide (CAS 2246646-52-4)
- 1-Cyclopentyl-3-methyl-1h-pyrazole (CAS 1170199-10-6)
- N-(6-Methylpyridin-2-yl)cyclopropanecarboxamide (CAS 186253-86-1)
- TRAF6 Peptide trifluoroacetate salt (CAS 852805-92-6)
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