2,5-Difluoro-3,6-dihydroxycyclohexa-2,5-diene-1,4-dione CAS 771-64-2
| CAS No. | 771-64-2 |
| Molecular Formula | C6H2F2O4 |
| Molecular Weight | 176.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2,5-Difluoro-3,6-dihydroxycyclohexa-2,5-diene-1,4-dione 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.
2,5-Difluoro-3,6-dihydroxycyclohexa-2,5-diene-1,4-dione (CAS 771-64-2) is a high-purity analytical reference standard with the molecular formula C6H2F2O4 and a molecular weight of 176.07 g/mol.
Based on its molecular formula C6H2F2O4, 2,5-Difluoro-3,6-dihydroxycyclohexa-2,5-diene-1,4-dione contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 176.07 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C6H2F2O4 |
| Molecular Weight | 176.07 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
Related Difluoro Standards
- 2,2-Difluoro-2-sulfoacetic Acid (CAS 422-67-3)
- 2,2-Difluoro-2-(1-methyl-1h-pyrazol-4-yl)acetic acid (CAS 1248011-19-9)
- 2,2-Difluoro-2-(1-methyl-1h-imidazol-2-yl)acetic acid (CAS 1342482-15-8)
- 2,2-Difluoro-2-(1-methyl-1H-pyrazol-5-yl)acetic acid (CAS 1342825-90-4)
- Ethyl 2,4-difluoro-1H-imidazole-5-carboxylate (CAS 89676-59-5)
- 2,2-Difluoro-2-(3-fluorophenyl)ethan-1-ol (CAS 1341215-25-5)
- 2,2-Difluoro-2-(2-fluorophenyl)ethanol (CAS 1380202-32-3)
- (S)-2,2-Difluoro-1-(3-fluorophenyl)ethan-1-ol (CAS 1821734-28-4)
Recommended Standards
- 2,4,5,6-Tetrafluoronicotinonitrile (CAS 35720-79-7)
- 3,4,5,6-Tetrafluoropicolinonitrile (CAS 41793-83-3)
- 2,3,5,6-Tetrafluoroisonicotinonitrile (CAS 16297-07-7)
- Benzyl-2,3,4,5,6-d5 Bromide (CAS 71258-22-5)
- 1-Cyclopropyl-N-(4-methoxybenzyl)methanamine (CAS 1019611-33-6)
- (5-(2,4-Dichlorophenyl)furan-2-yl)methanol (CAS 292644-30-5)
- 887407-50-3 N-Succinimidyloxycarbonylheptyl Methanethiosulfonate DTXSID50401240 (CAS 887407-50-3)
- 3-(4-(Ethylthio)phenyl)-1-phenyl-1H-pyrazole-4-carbaldehyde (CAS 957014-27-6)
- (((9H-fluoren-9-yl)methoxy)carbonyl)histidine (CAS 157355-76-5)
- (2R,4S)-1-((Benzyloxy)carbonyl)-4-((tert-butoxycarbonyl)amino)pyrrolidine-2-carboxylic acid (CAS 489446-81-3)
- Mirogabalin Impurity 194 (CAS CATO-C4X-2924194)
- 2-(6-Hydroxy-2-oxo-2h-chromen-4-yl)acetic acid (CAS 68747-26-2)
- 3,5-Diiodo-D-tyrosine (CAS 16711-71-0)
- Tirzepatide Impurity 20 (CAS CATO-C4X-324020)
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