4,7-Diphenyl-3a,4,7,7a-tetrahydroisobenzofuran-1,3-dione CAS 20929-46-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 20929-46-8 |
| Molecular Formula | C20H16O3 |
| Molecular Weight | 304.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,7-Diphenyl-3a,4,7,7a-tetrahydroisobenzofuran-1,3-dione (CAS 20929-46-8) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C20H16O3. Molecular weight: 304.34 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C20H16O3 |
| Molecular Weight | 304.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
Related Diphenyl Standards
- Ethyl 2,4-diphenyl-5-pyrimidinecarboxylate (CAS 77995-07-4)
- 1-{[(1,3-diphenyl-1H-pyrazol-4-yl)methylidene]amino}guanidine (CAS 380436-54-4)
- Diphenyl pentylphosphonate (CAS 21645-07-8)
- Diphenyl(4-vinylphenyl)phosphineoxide (CAS 47182-95-6)
- 1,6-Diphenyl-1H-pyrazolo[3,4-d]pyrimidine-4-thiol (CAS 917748-00-6)
- 2-((5,6-Diphenyl-1,2,4-triazin-3-yl)thio)acetonitrile (CAS 332109-95-2)
- 5-(1,3-Diphenyl-1H-pyrazol-4-yl)-1,3,4-oxadiazol-2(3H)-one (CAS 917947-68-3)
- 5,7-Diphenyl-1,3-diazaadamantan-6-one (CAS 19066-35-4)
Recommended Standards
- 4,6-Dibromo-2-chloro-3-fluorophenol (CAS 2432848-51-4)
- 4-Amino-N-(4-phenoxyphenyl)benzamide (CAS 307330-41-2)
- 4-(Benzyloxy)phenyl benzoate (CAS 2444-21-5)
- N-Benzyl-4-nitro-1H-pyrazole-3-carboxamide (CAS 405278-65-1)
- 2-(Furan-2-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole (CAS 2096342-23-1)
- (2R,3S,4S)-5-(((2R,3R,4R,5S)-5-((((2R,3R,4R,5S)-5-((((2R,3R,4R,5S)-3,4-Dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)oxy)methyl)-3,4-dihydroxytetrahydrofuran-2-yl)oxy)methyl)-3,4-dihydroxytetrahydrofuran-2-yl)oxy)-2,3,4-trihydroxypentanal (CAS 190852-24-5)
- 2-(Cyclopentylthio)pyridine-5-boronic acid (CAS 1218790-70-5)
- 2,6-Dimethyl-1,3-benzothiazole (CAS 2941-71-1)
- 5-(2,5-Difluorophenyl)-6-methylthiazolo[3,2-b][1,2,4]triazole (CAS 1956377-27-7)
- ([D?]Val?·1?)-C-Peptide (human) (CAS 1802078-41-6)
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