7,9-Diphenyl-8H-cyclopenta[a]acenaphthylen-8-one CAS 641-57-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 641-57-6 |
| Molecular Formula | C27H16O |
| Molecular Weight | 356.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
7,9-Diphenyl-8H-cyclopenta[a]acenaphthylen-8-one (CAS 641-57-6) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C27H16O. Molecular weight: 356.42 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C27H16O |
| Molecular Weight | 356.42 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 | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 20.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Diphenyl Standards
- Diphenyl((phenylsulfonyl)methyl)phosphine oxide (CAS 94333-12-7)
- N-(1,3-Diphenyl-1H-pyrazol-5-yl)-4-fluorobenzamide (CAS 781652-51-5)
- 3-(1,3-Diphenyl-1H-pyrazol-5-yl)-6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[4,3-a]azepine (CAS 956753-89-2)
- N-(4-(1,3-Diphenyl-4,5-dihydro-1H-pyrazol-5-yl)phenyl)acetamide (CAS 10179-72-3)
- N-(4-(1,5-Diphenyl-4,5-dihydro-1H-pyrazol-3-yl)phenyl)acetamide (CAS 13393-39-0)
- 4-Methyl-3,5-diphenyl-1H-pyrazol-1-yl dimethylsulfamate (CAS 400084-12-0)
- 2,2-Diphenyl-1-(4-(pyridin-2-yl)piperazin-1-yl)ethan-1-one (CAS 325779-59-7)
- (Z)-2-(1,2-Diphenyl-3-(piperidin-1-yl)prop-1-en-1-yl)pyridine (CAS 115291-29-7)
Recommended Standards
- 6-Ethyl 2-[[(2-carboxyethyl)thio]methyl]-1,4-dihydro-5-methyl-4-oxothieno[2,3-d]pyrimidine-6-carboxylate (CAS 781626-60-6)
- 7-[2-(2,6-dioxo-3-piperidyl)-1-oxo-isoindolin-4-yl]heptanal (CAS 2762039-44-9)
- 6,7-Dimethoxy-2-methyl-1-(4-nitrophenethyl)-1,2,3,4-tetrahydroisoquinoline (CAS 63937-57-5)
- (S)-1-(4-Fluorophenyl)-3-iodopropan-1-ol (CAS 926657-23-0)
- 4-(3-Fluoro-4-methylbenzoyl)-3-hydroxy-5-(4-nitrophenyl)-1-(pyridin-3-ylmethyl)-1H-pyrrol-2(5H)-one (CAS 618073-84-0)
- 1-(1H-Pyrrole-2-carbonyl)piperidine-3-carboxylic acid (CAS 1042602-88-9)
- Brivaracetam Impurity 204 (CAS CATO-C4X-2007204)
- Pregabalin impurity 99 (CAS 1511511-44-6)
- Calcium cyclohexylsulfamate (CAS 201280-50-4)
- Semaglutide Impurity 144 (CAS 394210-59-4)
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 13829788188 / jacky.chen@cato-chem.com