Cholesteryl Bromide CAS 516-91-6
| CAS No. | 516-91-6 |
| Molecular Formula | C27H45Br |
| Molecular Weight | 449.55 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Cholesteryl Bromide (C27H45Br) contains bromine substitution, an aromatic ring system. 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 449.55 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
CATO supplies Cholesteryl Bromide (CAS 516-91-6), a certified reference material (molecular formula C27H45Br, MW 449.55 g/mol) for analytical method development and quality control.
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.
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 | C27H45Br |
| Molecular Weight | 449.55 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| 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.) | 1957 |
| Halogen Content | Br-containing |
Related Cholesteryl Standards
- Cholesteryl n-butyrate (CAS 521-13-1)
- Cholesteryl isoamyl ether (CAS 74996-30-8)
- Cholesteryl n-valerate (CAS 7726-03-6)
- CHOLESTERYL HYDROGEN SUCCINATE (CAS 1510-20-9)
- Cholesteryl Benzoate (CAS 604-32-0)
- i-Cholesteryl methyl ether (CAS 2867-93-8)
- Cholesteryl heptanoate (CAS 1182-07-6)
- Cholesteryl cinnamate (CAS 1990-11-0)
Recommended Standards
- 6-N-Biotinylaminohexyl isopropyl hydrogenphosphonate, 96% (CAS 224583-37-3)
- ICA-121431, >98% (HPLC) (CAS 313254-51-2)
- 3,5-Di([1,1'-biphenyl]-4-yl)-4-phenyl-4H-1,2,4-triazole (CAS 387391-50-6)
- CAS CATO-C3D-4200 (CAS CATO-C3D-4200)
- 5-Hydroxy-2-methylnicotinamide (CAS 1935228-87-7)
- 5-bromo-2-hydroxy-3-nitropyridine (CAS 15862-34-7)
- cis-2-aminocyclobutane-1-carboxylic acid hydrochloride (CAS 551936-38-0)
- 2-[(4-Nitrophenyl)carbamoyl]thiophen-3-yl N,N-dimethylsulfamate (CAS 338794-40-4)
- 1-Boc-octahydropyrrolo[3,4-b]pyridine (CAS 159877-36-8)
- N-(2-(2-(4-Chlorophenyl)thiazolo[3,2-b][1,2,4]triazol-6-yl)ethyl)propionamide (CAS 894035-89-3)
- 6-(2,2,2-Trifluoroethyl)thieno[2,3-d]pyrimidine-4-carbonitrile (CAS 2055107-61-2)
- 1-Hydroxyl Indole (CAS 3289-82-5)
- 3-(Aminomethyl)-7-(2-fluorophenyl)-[1,2,4]triazolo[4,3-a]pyrazin-8(7H)-one (CAS 1710845-13-8)
- Tau Peptide (306-336) (Repeat 3 Domain) trifluoroacetate salt (CAS 330456-26-3)
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