Cholesterol Impurity 1 CAS 2876-71-3
| CAS No. | 2876-71-3 |
| Molecular Formula | C13H12O2 |
| Molecular Weight | 200.23 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Cholesterol Impurity 1 (CAS 2876-71-3), a pharmacopoeial impurity reference standard (molecular formula C13H12O2, MW 200.23 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C13H12O2, Cholesterol Impurity 1 contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 200.23 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).
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 | C13H12O2 |
| Molecular Weight | 200.23 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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.) | 1957 |
Related Cholesterol Standards
- Cholesterol Impurity 3 (CAS 51982-45-7)
- Cholesterol EP Impurity C (CAS 651-54-7)
- Cholesterol Impurity 17 (CAS 14214-69-8)
- Cholesterol Impurity 29 (CAS 881024-99-3)
- Cholesterol Impurity 30 (CAS 17608-47-8)
- Cholesterol Impurity 31 (CAS 117556-83-9)
- Cholesterol probe for Smoothened (CAS CATO-C3D-262450)
- Cholesterol Impurity 25 (CAS CATO-C4X-196725)
Recommended Standards
- Oseltamivir Impurity 231 (CAS CATO-C4X-1720231)
- Brivaracetam Impurity 69 (CAS CATO-C4X-200769)
- Naproxen Impurity 52 (CAS CATO-C4X-170852)
- Brivaracetam impurity 95 (CAS 2052297-73-9)
- Rosuvastatin Impurity 62 (CAS 799842-07-2)
- Galantamine EP Impurity F HBr (CAS 1556014-63-1)
- Fenticonazole Impurity 8 (CAS CATO-C4X-24918)
- 2,5-Difluoropyridin-4-ol (CAS 1806314-48-6)
- tert-Butyl 2-(6-chloropyridin-3-yl)morpholine-4-carboxylate (CAS 1400997-31-0)
- (3r,5r,7r)-1-(4-Bromophenyl)adamantane (CAS 2245-43-4)
- 2,2-dioxo-3-propan-2-yl-1H-2lambda6,1,3-benzothiadiazin-4-one (CAS 1330188-66-3)
- tert-Butyl6-acetamidospiro[chromane-2,4'-piperidine]-1'-carboxylate (CAS 886363-78-6)
- (1E)-1-[2-(4-Bromo-2-fluorophenoxy)phenyl]-N-(4-iodophenyl)methanimine (CAS 477886-96-7)
- Semaglutide impurity 74 (CAS CATO-C4X-222674)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com