Cholesterol Impurity 24 CAS 26654-78-4
| CAS No. | 26654-78-4 |
| Molecular Formula | C27H46O2 |
| Molecular Weight | 402.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Cholesterol Impurity 24 (C27H46O2) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Cholesterol Impurity 24 (CAS 26654-78-4), molecular formula C27H46O2 and molecular weight 402.65 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C27H46O2 |
| Molecular Weight | 402.65 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.) | 1964 |
Related Cholesterol Standards
- Cholesterol-5α,6α-epoxide (CAS 1250-95-9)
- Cholesterol Impurity 13 (CAS 34310-88-8)
- Cholesterol Impurity 19 (CAS 566-46-1)
- Cholesterol Impurity 25 (CAS 26358-75-8)
- Cholesterol Impurity 28 (CAS 70223-10-8)
- Cholesterol Impurity 37 (CAS 7591-17-5)
- Cholesterol Impurity 26 (CAS 4505-68-4)
- Cholesterol 4alpha-Methyl 7-En Analog (CAS 481-25-4)
Recommended Standards
- 19-Hydroxy Cholesterol (CAS 561-63-7)
- 22-beta-Hydroxy Cholesterol (CAS 22348-64-7)
- 4α-Hydroxycholesterol (CAS 34310-86-6)
- 15beta-hydroxycholestene 26660-51-5 (CAS 26660-51-5)
- Indoramin Impurity C (CAS 33953-37-6)
- N-(4-(4-Chlorophenyl)thiazol-2-yl)isoxazole-5-carboxamide (CAS 919758-98-8)
- 5-(3-Chlorophenyl)dihydro-2(3H)-furanone (CAS 875256-56-7)
- Relebactam Impurity 11 (CAS CATO-C4X-214411)
- Methyl 3-{2-[(2-{2-[(3-methylphenyl)sulfanyl]acetamido}phenyl)sulfanyl]acetamido}thiophene-2-carboxylate (CAS 861212-53-5)
- ethyl (4Z,7Z,10Z,13Z,16Z)-henicosa-4,7,10,13,16-pentaenoate (CAS CATO-C4X-280642)
- tert-Butyl 4-(((6-chloro-2-(methylthio)pyrimidin-4-yl)oxy)methyl)piperidine-1-carboxylate (CAS 1261232-40-9)
- 5-(2-Methoxy-5-methylphenyl)-5-oxovaleric acid (CAS 71472-14-5)
- 4-(Cyclopentylmethyl)thiomorpholine-3-carboxylic acid (CAS 1543833-72-2)
- D-Ala28-Tirzepatide (CAS CATO-CPTD788906)
Why CATO?
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