4,4-Difluorobut-2-ynoic acid CAS 110680-65-4
| CAS No. | 110680-65-4 |
| Molecular Formula | C4H2F2O2 |
| Molecular Weight | 120.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 120.05 g/mol gives 4,4-Difluorobut-2-ynoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 4,4-Difluorobut-2-ynoic acid (CAS 110680-65-4), a certified reference material (molecular formula C4H2F2O2, MW 120.05 g/mol) for analytical method development and quality control.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, 4,4-Difluorobut-2-ynoic acid is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 120.05 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 4,4-Difluorobut-2-ynoic acid 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.
Physical & Chemical Properties
| Molecular Formula | C4H2F2O2 |
| Molecular Weight | 120.05 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | F-containing |
Related Difluorobut Standards
- (E)-4,4-Difluorobut-2-enoic acid (CAS 37759-73-2)
- 4,4-Difluorobut-2-enoic acid (CAS 944328-71-6)
- 2,2-Difluorobut-3-en-1-ol (CAS 182439-31-2)
- Ethyl 4,4-difluorobut-2-ynoate (CAS 129922-56-1)
- Ethyl 4,4-difluorobut-2-enoate (CAS 1992-97-8)
- (E)-2,3-Difluorobut-2-Enedioic Acid (CAS 2714-32-1)
- 3-(1,1-Difluorobut-3-en-1-yl)-8-(trifluoromethyl)-[1,2,4]triazolo[4,3-a]pyridine (CAS 477889-55-7)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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