1-(Difluoromethoxy)-4-ethynylbenzene CAS 519059-04-2
| CAS No. | 519059-04-2 |
| Molecular Formula | C9H6F2O |
| Molecular Weight | 168.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
1-(Difluoromethoxy)-4-ethynylbenzene (CAS 519059-04-2), molecular formula C9H6F2O and molecular weight 168.14 g/mol, is a CATO reference standard with documented purity and traceability.
1-(Difluoromethoxy)-4-ethynylbenzene (C9H6F2O) contains a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures 1-(Difluoromethoxy)-4-ethynylbenzene 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 | C9H6F2O |
| Molecular Weight | 168.14 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Halogen Content | F-containing |
Related Difluoromethoxy Standards
- 1-(Difluoromethoxy)-2-ethynylbenzene (CAS 1342158-87-5)
- 3-(Difluoromethoxy)phenylacetylene (CAS 519059-03-1)
- 2-(Difluoromethoxy)benzonitrile (CAS 56935-78-5)
- 3-(Difluoromethoxy)benzonitrile (CAS 97582-88-2)
- 4-(Difluoromethoxy)benzonitrile (CAS 90446-25-6)
- 6-(difluoromethoxy)pyridin-2-amine (CAS 1131007-43-6)
- 2-(difluoromethoxy)pyridin-4-amine (CAS 1211587-46-0)
- 4-(Difluoromethoxy)cyclohexanol (CAS 1565472-22-1)
Recommended Standards
- 1-(3,4-Difluorophenyl)prop-2-en-1-one (CAS 527694-01-5)
- 1-(Difluoromethyl)-1H-benzo[d]imidazole (CAS 84941-15-1)
- (e)-3-(2,5-Difluorophenyl)acrylaldehyde (CAS 872263-26-8)
- 1,2-Difluoro-3-(prop-2-yn-1-yloxy)benzene (CAS 890840-88-7)
- 4-Methylpyridine-2-thiol (CAS 18368-65-5)
- Bakkenolide B; Fukinolide (CAS 18455-98-6)
- 2-Benzyl-1H-imidazo[4,5-e][1,2,4]triazin-3(2H)-one (CAS 61322-18-7)
- 1-Butoxy-3-(4-methylpiperazin-1-yl)propan-2-ol dihydrochloride (CAS 1217045-20-9)
- (1Z,2Z)-1,2-diphenylethane-1,2-dione dihydrazone (CAS 4702-78-7)
- (Z)-1-Chloro-2-(2-(4-fluorophenyl)prop-1-en-1-yl)benzene (CAS 1187311-54-1)
- 4-Methoxycyclohexanecarbonyl chloride (CAS 123790-13-6)
- Mifepristone Impurity 10 (CAS CATO-C4X-121610)
- (S)-1-(2-(trifluoromethoxy)phenyl)ethan-1-amine (CAS 1415380-63-0)
- Liraglutide-d8 Tetratrifluoroacetate (CAS 204656-20-2 (non-labelled, free base))
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