4-Ethynyl-2,3-difluorobenzonitrile CAS 175283-25-7
| CAS No. | 175283-25-7 |
| Molecular Formula | C9H3F2N |
| Molecular Weight | 163.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
4-Ethynyl-2,3-difluorobenzonitrile (CAS 175283-25-7), molecular formula C9H3F2N and molecular weight 163.12 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H3F2N, 4-Ethynyl-2,3-difluorobenzonitrile contains a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 163.12 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).
CATO manufactures 4-Ethynyl-2,3-difluorobenzonitrile 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 | C9H3F2N |
| Molecular Weight | 163.12 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-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 |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2007 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Ethynyl Standards
- 4-Ethynyl-2,6-difluorobenzonitrile (CAS 2380236-60-0)
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- 3-Ethynyl-4-nitrophenol (CAS 1260790-65-5)
- 3-Ethynyl-5-nitropyridin-4-amine (CAS 1824206-14-5)
- 2-Ethynyl-3-nitropyridin-4-amine (CAS 1851876-98-6)
- 6-Ethynyl-2-nitropyridin-3-amine (CAS 1876987-31-3)
- 2-Ethynyl-4-nitrophenol (CAS 885951-98-4)
- 4-Ethynyl-2-nitrophenol (CAS 70239-81-5)
Recommended Standards
- 7,7-Difluorotetrahydro-1H-Pyrrolo[1,2-c][1,3]Oxazol-3-One (CAS 173315-17-8)
- (1R,4S,5S)-6,6-difluoro-4-(hydroxymethyl)-3-azabicyclo[3.1.0]Hexan-2-one (CAS 2306248-82-6)
- 4-Difluoromethyl-piperidine-2,6-dione (CAS 1706458-55-0)
- (1S,4S,5R)-6,6-difluoro-4-(hydroxymethyl)-3-azabicyclo[3.1.0]Hexan-2-one (CAS 2306253-79-0)
- 6,7,8,9-Tetrahydro-5h-benzo[7]annulene-5-sulfonamide (CAS 1249917-60-9)
- (4-Chlorophenyl)(piperidin-4-yl)methanol hydrochloride (CAS 38081-59-3)
- 4-(3-Phenyl-4,5-dihydro-1H-pyrazol-1-yl)benzamide (CAS 61447-65-2)
- Isopropyl 3-(aminomethyl)benzoate (CAS 1183045-29-5)
- 1,4-Diethoxy-2-methylbenzene (CAS 41901-72-8)
- 4-(4-Chlorophenyl)-3-oxobutanenitrile (CAS 701910-77-2)
- 2-Chloro-4-(3-chlorophenyl)-6-phenyl-1,3,5-triazine (CAS 2125473-29-0)
- 4-Hydroxy Atorvastatin Bis sodium (CAS 1276537-18-8)
- 3'-Methoxy-3-(2-methoxyphenyl)propiophenone (CAS 898769-79-4)
- Semaglutide impurity 74 (CAS CATO-C4X-222674)
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