Cholesterol Impurity 18 CAS 54378-86-8
| CAS No. | 54378-86-8 |
| Molecular Formula | C27H44O4S |
| Molecular Weight | 464.70 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Cholesterol Impurity 18 (CAS 54378-86-8), molecular formula C27H44O4S and molecular weight 464.70 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Cholesterol Impurity 18 (C27H44O4S) contains a steroid core, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 464.70 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures Cholesterol Impurity 18 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 | C27H44O4S |
| Molecular Weight | 464.70 g/mol |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Sulfur Atoms | 1 |
Related Cholesterol Standards
- Cholesterol ethyl carbonate (CAS 23836-43-3)
- Cholesterol isobutyrate (CAS 1180-43-4)
- Cholesterol Isopropyl Carbonate (CAS 78916-25-3)
- Cholesterol Chloroformate (CAS 7144-08-3)
- Cholesterol Methyl Carbonate (CAS 15507-52-5)
- Cholesterol Impurity 38 (CAS 41461-10-3)
- Cholesterol hexanoate (CAS 1062-96-0)
- 7-Oxo Cholesterol 3-Acetate (CAS 809-51-8)
Recommended Standards
- 2-(((6-Bromo-4-oxoquinazolin-3(4H)-yl)methyl)amino)-N-((4-chlorophenyl)carbamoyl)acetamide (CAS 86816-93-5)
- N1,N1-Dimethyl-N2-(pyridin-3-ylmethyl)-N2-(4-(2,4,6-triisopropylphenyl)thiazol-2-yl)ethane-1,2-diamine (CAS 136468-36-5)
- Cholecalciferol Sulfate (CAS 10529-43-8)
- 3-(2,4-Dihydroxyphenyl)-3-(4-(dimethylamino)phenyl)isobenzofuran-1(3H)-one (CAS 6310-69-6)
- (2E)-3-(2,4-Dimethylphenyl)-N-(4-iodophenyl)prop-2-enamide (CAS 329778-40-7)
- tert-Butyl (3-bromofuran-2-yl)carbamate (CAS 704913-90-6)
- 5-(3-Bromophenyl)-5-methyl-5H-pyrrolo[3,4-b]pyridin-7-amine (CAS 917777-00-5)
- 3-(4-Ethylbenzoyl)-4-methylpyridine (CAS 1187168-18-8)
- cis-6-Benzyloctahydro-2H-pyrano[3,2-c]pyridine (CAS 1629784-84-4)
- 1,1-Diethoxy-3-isocyanopropane (CAS 139723-02-7)
- ((3-(Hydroxymethyl)benzyl)imino)dimethyl-lambda6-sulfanone (CAS 1621962-64-8)
- 2-(3,4-Dichlorophenyl)oxazole-4-carboxylic acid (CAS 1249920-40-8)
- 2-((1H-indol-4-yl)oxy)acetic acid (CAS 157889-29-7)
- D-[Ser]8-Semaglutide (CAS CATO-CPTD788632)
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