3-Methoxy-1,5-diphenylpentan-1-one CAS 51238-86-9
| CAS No. | 51238-86-9 |
| Molecular Formula | C18H20O2 |
| Molecular Weight | 268.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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 supplies 3-Methoxy-1,5-diphenylpentan-1-one (CAS 51238-86-9), a certified reference material (molecular formula C18H20O2, MW 268.35 g/mol) for analytical method development and quality control.
Owing to a steroid core, a hydroxyl group, an ether linkage, 3-Methoxy-1,5-diphenylpentan-1-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 268.35 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 | C18H20O2 |
| Molecular Weight | 268.35 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
Related Methoxy Standards
- 1-(4'-Methoxy-[1,1'-biphenyl]-4-yl)pentan-1-one (CAS 56116-77-9)
- 1-Benzyl-5-methoxy-1,2,3,4-tetrahydronaphthalene (CAS 690232-04-3)
- Ethyl 2-((4-methoxy-3,5-dimethylphenyl)thio)-2-oxoacetate (CAS 1443309-84-9)
- 7-Methoxy-4-(pyridin-3-yl)quinoline-2-thiol (CAS 878466-15-0)
- 6-Methoxy-4-(piperazin-1-yl)quinoline-3-carbonitrile (CAS 1255780-54-1)
- 3-Methoxy-2-{[(2E)-3-phenylprop-2-enyl]-oxy}benzaldehyde (CAS 133495-64-4)
- 7-Methoxy-1-methyl-6-(pyridin-3-yl)-1,2,3,4-tetrahydroquinolin-2-one (CAS 1392223-73-2)
- 3-Methoxy-2-(4-methoxybenzylamino)benzonitrile (CAS 1437794-83-6)
Recommended Standards
- 3-Amino-N-(2,6-diethylphenyl)benzamide (CAS 500274-46-4)
- 3-Phenylpropyl 3-phenylpropanoate (CAS 60045-27-4)
- 3,6,6-Trimethyl-1-(o-tolyl)-1,5,6,7-tetrahydro-4H-indazol-4-one (CAS 442643-10-9)
- 4-((2,4-Dimethylbenzyl)oxy)chromane (CAS 866155-74-0)
- (2R,3S,4S,5R,6S)-2-((Benzoyloxy)methyl)-6-(ethylthio)tetrahydro-2H-pyran-3,4,5-triyl tribenzoate (CAS 138661-53-7)
- 2-(Tert-butyl)-1H-pyrrolo[2,3-b]pyridine-3-carbaldehyde (CAS 1049676-91-6)
- 2-(4-Fluorophenyl)-N-(2-(trifluoromethoxy)benzyl)-2H-tetrazole-5-carboxamide (CAS 1396758-70-5)
- (4-Methoxy-4-methylcyclohexyl)methanamine (CAS 1956379-31-9)
- 3-Nitro-2'-(pyrrolidine-3-carbonyl)-[1,1'-biphenyl]-4-carboxylic acid (CAS 1262010-51-4)
- 4-(2-Chlorobenzyl)thiomorpholine (CAS 414873-32-8)
- (3-Chlorophenyl)(3-(4-chlorophenyl)-5,6-dihydropyridazin-1(4H)-yl)methanone (CAS 159799-55-0)
- 4-(Indolin-7-yl)morpholine (CAS 1153392-41-6)
- (S)-1-(1-Phenylethyl)-1-(3-(triethoxysilyl)propyl)urea (CAS 68959-21-7)
- Neuropeptide Y (13-36) (porcine) (CAS 113662-54-7)
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