Bis(3,5-difluorophenyl)methanone CAS 139911-09-4
| CAS No. | 139911-09-4 |
| Molecular Formula | C13H6F4O |
| Molecular Weight | 254.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Bis(3,5-difluorophenyl)methanone (CAS 139911-09-4), molecular formula C13H6F4O and molecular weight 254.18 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system, Bis(3,5-difluorophenyl)methanone is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 254.18 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Bis(3,5-difluorophenyl)methanone meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C13H6F4O |
| Molecular Weight | 254.18 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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.) | 1996 |
| Halogen Content | F-containing |
Related Bis Standards
- (2,4-Difluorophenyl)(3,5-difluorophenyl)methanone (CAS 1096971-71-9)
- (2,4-Difluorophenyl)(3,4-difluorophenyl)methanone (CAS 1097034-16-6)
- (3,4-Difluorophenyl)(3,5-difluorophenyl)methanone (CAS 746651-92-3)
- ethyl 5-(2,6-difluorophenyl)-1,3,4-oxadiazole-2-carboxylate (CAS 1707637-40-8)
- 3-(3-(2,6-Difluorophenyl)-1,2,4-oxadiazol-5-yl)propanoic acid (CAS 1708168-40-4)
- 3-(2,6-Difluorophenyl)-4,4,4-trifluorobutanoic acid (CAS 1272852-70-6)
- 3-(2,4-Difluorophenyl)-4,4,4-trifluorobutanoic acid (CAS 1369410-09-2)
- 3-(2,3-Difluorophenyl)-4,4,4-trifluorobutanoic acid (CAS 1409707-29-4)
Recommended Standards
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- 6-(Boc-amino)pyridine-3-boronic Acid Pinacol Ester (CAS 910462-31-6)
- 5-(cyclopentylmethyl)-4H-1,2,4-triazole-3-thiol (CAS 923231-84-9)
- 4,4-Dimethyl-N-(thiophen-2-ylmethyl)cyclohexan-1-amine (CAS 1343445-04-4)
- 4,4-Dinitrostilbene (CAS 736-31-2)
- 1,9-Dioxaspiro[5.5]undecan-4-ylmethanol (CAS 1517862-80-4)
- Selexipag Impurity 8 (CAS CATO-C4X-19618)
- Ethyl 5-(benzylamino)-3-phenyl-1,2,4-triazine-6-carboxylate (CAS 866051-63-0)
- ([D?]Val?·1?)-C-Peptide (human) (CAS 1802078-41-6)
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