4-Ethynyl-1-fluoro-2-methylbenzene CAS 351002-93-2
| CAS No. | 351002-93-2 |
| Molecular Formula | C9H7F |
| Molecular Weight | 134.15 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.
CATO supplies 4-Ethynyl-1-fluoro-2-methylbenzene (CAS 351002-93-2), a certified reference material (molecular formula C9H7F, MW 134.15 g/mol) for analytical method development and quality control.
Owing to fluorine substitution, an aromatic ring system, 4-Ethynyl-1-fluoro-2-methylbenzene is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 134.15 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | 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.) | 2025 |
| 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)
- 2-Ethynyl-1-fluoro-4-methylbenzene (CAS 956386-39-3)
Recommended Standards
- 2-Fluoro-3-methylpentanoic acid (CAS 6087-16-7)
- 4-Fluorobutyl acetate (CAS 373-09-1)
- 4-Mercapto-2-oxobutanoic acid (CAS 4273-28-3)
- 2-Ethyl-2-fluorobutanoic Acid (CAS 34067-70-4)
- 2-Cyclopropoxy-1-iodo-3-methylbenzene (CAS 1243464-71-2)
- Phosphine, 1,1′-[(1S)-2,2′,3,3′-tetrahydro-3,3,3′,3′,5,5′-hexamethyl-1,1′-spirobi[1H-indene]-7,7′-diyl]bis[1,1-diphenyl- (CAS 2213471-24-8)
- N-Ethyl-2-hydroxysuccinimide-d5 (CAS 1588523-04-9)
- 5-Bromo-1-(3-fluorobenzyl)pyrimidin-2(1h)-one (CAS 1822826-57-2)
- (5-Fluoroquinolin-8-yl)methanol (CAS 1153758-16-7)
- N'-(4-Methoxybenzylidene)-3-methyl-1-phenyl-1H-thieno[2,3-c]pyrazole-5-carbohydrazide (CAS 332390-41-7)
- 3-Cyclopropoxy-N,2-dimethylaniline (CAS 1243328-61-1)
- 6-tert-Butyl 3-ethyl 4-chloro-7,8-dihydro-1,6-naphthyridine-3,6(5H)-dicarboxylate (CAS 1822861-42-6)
- N-(sec-butyl)-5-(1-isopropylpyrrolidin-2-yl)pyridin-2-amine (CAS 1352514-50-1)
- Semaglutide impurity 229 (CAS CATO-C4X-2226229)
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