2-Ethynyl-1-fluoro-4-methylbenzene CAS 956386-39-3
| CAS No. | 956386-39-3 |
| Molecular Formula | C9H7F |
| Molecular Weight | 134.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 134.15 g/mol gives 2-Ethynyl-1-fluoro-4-methylbenzene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-Ethynyl-1-fluoro-4-methylbenzene (CAS 956386-39-3) is a high-purity analytical reference standard with the molecular formula C9H7F and a molecular weight of 134.15 g/mol.
Structurally, 2-Ethynyl-1-fluoro-4-methylbenzene (C9H7F) contains fluorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 134.15 g/mol, it falls into the low-molecular-weight range. 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.
As a certified reference material (CRM), 2-Ethynyl-1-fluoro-4-methylbenzene meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C9H7F |
| Molecular Weight | 134.15 g/mol |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
Related Ethynyl Standards
- 2-Ethynyl-4-fluoro-1-methylbenzene (CAS 1233512-88-3)
- 2-Ethynyl-1-fluoro-3-methylbenzene (CAS 1279106-21-6)
- 1-Ethynyl-4-fluoro-2-methylbenzene (CAS 1339707-20-8)
- 1-Ethynyl-3-fluoro-2-methylbenzene (CAS 1340115-34-5)
- 4-Ethynyl-2-fluoro-1-methylbenzene (CAS 145069-53-0)
- 1-Ethynyl-2-fluoro-4-methylbenzene (CAS 928304-42-1)
- 1-Ethynyl-3-fluoro-5-methylbenzene (CAS 960589-12-2)
- 4-Ethynyl-1-fluoro-2-methylbenzene (CAS 351002-93-2)
Recommended Standards
- 2-Ethyl-2-fluorobutanoic Acid (CAS 34067-70-4)
- 2-Fluoro-3-methylpentanoic acid (CAS 6087-16-7)
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- 2-(Difluoromethyl)thiophene (CAS 98909-14-9)
- 5,7-Dihydroxy-3-methoxy-2-(3,4,5-trimethoxyphenyl)-4H-chromen-4-one (CAS 14585-04-7)
- 4-Chloro-N-(2-(piperidin-1-yl)-5-(trifluoromethyl)phenyl)butanamide (CAS 1858255-70-5)
- cis-Ethyl 5-oxo-4,5,6,6a-tetrahydro-3aH-cyclopenta[d]isoxazole-3-carboxylate (CAS 1428077-54-6)
- 7-chloro-2-(chloromethyl)-5-methylsulfanyl-imidazo[1,2-c]pyrimidine (CAS 1059191-49-9)
- Ethyl 1,4,5,7-tetrahydropyrano[3,4-c]pyrazole-3-carboxylate (CAS 1630096-71-7)
- 5-Bromo-2-(diethoxymethyl)pyridine (CAS 1044209-33-7)
- 2-Bromo-6-fluoro-3-iodo-4-methylbenzaldehyde (CAS 2852767-99-6)
- Monohexyl Phthalate (CAS 24539-57-9)
- Tert-butyl (2S,4R)-4-(hydroxymethyl)-2-methylpyrrolidine-1-carboxylate (CAS 2306252-27-5)
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