2,4-Difluorobenzonitrile CAS 3939-09-1
| CAS No. | 3939-09-1 |
| Molecular Formula | C7H3F2N |
| Molecular Weight | 139.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 139.10 g/mol gives 2,4-Difluorobenzonitrile distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2,4-Difluorobenzonitrile (CAS 3939-09-1) is a high-purity analytical reference standard with the molecular formula C7H3F2N and a molecular weight of 139.10 g/mol.
2,4-Difluorobenzonitrile (C7H3F2N) contains a nitrile group, 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 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 | C7H3F2N |
| Molecular Weight | 139.10 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| 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.) | 1958 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Difluorobenzonitrile Standards
- 2,6-Difluorobenzonitrile (CAS 1897-52-5)
- 2,5-Difluorobenzonitrile (CAS 64248-64-2)
- 3,4-Difluorobenzonitrile (CAS 64248-62-0)
- 3,5-Difluorobenzonitrile 5-CYANO-1,3-DIFLUOROBENZENE 64248-63-1 AS02656 LABOTEST-BB LT00847812 LABOTEST-BB LT03331949 PARAGOS 390210 (CAS 64248-63-1)
- 4-Acetyl-3,5-difluorobenzonitrile (CAS 1523144-23-1)
- 4-Acetyl-2,5-difluorobenzonitrile (CAS 198280-43-2)
Recommended Standards
- 4-Amino-6-oxo-1,6-dihydropyrimidine-5-carbaldehyde (CAS 1004956-63-1)
- methyl 3-amino-2,2-difluoro-propanoate (CAS 688736-21-2)
- 3-Hydroxy-4-pyridinecarboxylic acid, 97% (CAS 10128-71-9)
- 3-Amino-4,4-difluorobutanoic acid (CAS 77162-46-0)
- Nile Red (CAS 7385-67-3)
- 2-Methoxy-5-nitro-3-(trifluoromethyl)pyridine (CAS 1803857-10-4)
- 2-Chloro-N-(furan-2-ylmethyl)acetamide (CAS 40914-13-4)
- 6-Bromo-5-methoxy-1H-pyrrolo[2,3-b]pyridine (CAS 1167056-86-1)
- (S)-WAY 100135 dihydrochloride (S)-N-tert-Butyl-3-(4-(2-methoxyphenyl)-piperazin-1-yl)-2-phenylpropanamide dihydrochloride 149007-54-5 (CAS 149007-54-5)
- 1-methyl-2-azabicyclo[2.1.1]hexane hydrochloride (CAS 637739-97-0)
- 8-Bromo-6-fluoro-1(2H)-isoquinolinone (CAS 2411635-05-5)
- Amorolfine Impurity 47 (CAS CATO-C4X-154247)
- Etrasimod Impurity 35 (CAS CATO-C4X-321435)
- D-Thr5-Tirzepatide (CAS CATO-CPTD788926)
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