2,2-Difluoro-5-methylbenzo[d][1,3]dioxole CAS 68119-29-9
| CAS No. | 68119-29-9 |
| Molecular Formula | C8H6F2O2 |
| Molecular Weight | 172.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,2-Difluoro-5-methylbenzo[d][1,3]dioxole (CAS 68119-29-9) is a high-purity analytical reference standard with the molecular formula C8H6F2O2 and a molecular weight of 172.13 g/mol.
Based on its molecular formula C8H6F2O2, 2,2-Difluoro-5-methylbenzo[d][1,3]dioxole 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 172.13 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C8H6F2O2 |
| Molecular Weight | 172.13 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 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Halogen Content | F-containing |
Related Difluoro Standards
- 2,3-Difluoro-5-methylbenzoic acid (CAS 1003709-96-3)
- 2,5-Difluoro-3-methylbenzoic acid (CAS 1003710-01-7)
- 3,5-Difluoro-2-methylbenzoic acid (CAS 1003710-06-2)
- 3,4-Difluoro-5-methylbenzoic acid (CAS 1017778-60-7)
- 3,4-Difluoro-2-methoxybenzaldehyde (CAS 1023023-24-6)
- 3,5-Difluoro-4-methylbenzoic acid (CAS 103877-76-5)
- 2,5-Difluoro-4-methylbenzoic Acid (CAS 103877-80-1)
- 2,2-Difluoro-2-(pyridin-2-yl)acetamide (CAS 1064652-41-0)
Recommended Standards
- 2,2-Difluoro-4-methylbenzo[d][1,3]dioxole (CAS 72769-03-0)
- 2,3-Difluoro-4-methoxybenzaldehyde (CAS 256417-11-5)
- 2-(Trifluoromethyl)-1,3-oxathiolan-5-one (CAS 79413-31-3)
- 2,3-Difluoro-4-methylbenzoic acid (CAS 261763-37-5)
- (1R,2S)-N1,N2-Dimethyl-1,2-cyclohexanediamine (CAS 1808263-71-9)
- 3-(Cyclopentyloxy)-2-fluoro-4-methoxyphenol (CAS 1881328-75-1)
- 4-(5-Bromo-3-(bromo(2-chlorophenyl)methyl)thiophen-2-yl)-3-(chloromethyl)-5-methyl-4H-1,2,4-triazole (CAS 62551-57-9)
- (2S,4R)-2-(4-fluorophenyl)-4-(trifluoromethyl)piperidine (CAS 2093327-82-1)
- N-[4-[2-(3,4-Dihydro-6,7-dimethoxy-2(1H)-isoquinolinyl)ethyl]phenyl]-4,5-dimethoxy-2-nitrobenzamide (CAS 1024592-54-8)
- 2-(Isopropyl-pyridin-3-ylmethyl-amino)-ethanol (CAS 1183772-92-0)
- 3-(5-Phenyl-1,3,4-oxadiazol-2-yl)aniline (CAS 107559-05-7)
- Lamivudine Impurity 5 (CAS 2032-34-0)
- Sr-(r*,r*)]-4-(2-methylbutyl)phenyl4-(2-methylbutyl)[1,1'-biphenyl]-4-carboxylate (CAS 69777-74-8)
- Semaglutide Impurity 160 (x TFA Salt) (CAS CATO-C4X-2226160)
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