| CAS No. | 60456-75-9 |
| Molecular Formula | C28H18O4 |
| Molecular Weight | 418.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
1,1'-Diphenyl-[1,1'-biisobenzofuran]-3,3'(1H,1'H)-dione (CAS 60456-75-9), molecular formula C28H18O4 and molecular weight 418.44 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, a hydroxyl group, an ether linkage, 1,1'-Diphenyl-[1,1'-biisobenzofuran]-3,3'(1H,1'H)-dione is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 418.44 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 1,1'-Diphenyl-[1,1'-biisobenzofuran]-3,3'(1H,1'H)-dione 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.
| Molecular Formula | C28H18O4 |
| Molecular Weight | 418.44 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 20.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |