5-Ethynyl-2-fluorobenzaldehyde CAS 1440535-11-4
| CAS No. | 1440535-11-4 |
| Molecular Formula | C9H5FO |
| Molecular Weight | 148.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Ethynyl-2-fluorobenzaldehyde (CAS 1440535-11-4) is a high-purity analytical reference standard with the molecular formula C9H5FO and a molecular weight of 148.13 g/mol.
Based on its molecular formula C9H5FO, 5-Ethynyl-2-fluorobenzaldehyde contains 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 148.13 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).
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.
As a certified reference material (CRM), 5-Ethynyl-2-fluorobenzaldehyde 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 | C9H5FO |
| Molecular Weight | 148.13 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, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | F-containing |
Related Ethynyl Standards
- 3-Ethynyl-4-fluorobenzaldehyde (CAS 100504-75-4)
- 2-Ethynyl-5-fluorobenzaldehyde (CAS 1015731-79-9)
- 4-Ethynyl-2-fluorobenzaldehyde (CAS 1267502-64-6)
- 4-Ethynyl-3-fluorobenzaldehyde (CAS 1449746-32-0)
- 2-Ethynyl-3-fluorobenzaldehyde (CAS 1638606-25-3)
- 3-Ethynyl-2-fluorobenzaldehyde (CAS 1851952-10-7)
- 2-Ethynyl-4-fluorobenzaldehyde (CAS 749874-24-6)
- 3-Ethynyl-2-nitropyridine (CAS 1044038-50-7)
Recommended Standards
- 2-(1H-Tetrazol-5-yl)pyrimidine (CAS 13600-33-4)
- Adipic acid-1,6-<SUP>13</SUP>C<SUB>2</SUB> (CAS 133954-44-6)
- Ethyl 2-Fluoroacetoacetate (CAS 1522-41-4)
- 3-Cyclopropyl-2-fluoro-3-hydroxypropanoic acid (CAS 1538131-99-5)
- 2-(3,5-dioxo-1,2,4-triazolidin-4-yl)acetic acid (CAS 78409-55-9)
- (S)-2-(((Benzyloxy)carbonyl)amino)-2-methylhept-6-enoic acid (CAS 1445137-79-0)
- 6-Chloro-1-((3,4-dichlorobenzyl)oxy)-2-(4-methoxyphenyl)-1H-benzo[d]imidazole (CAS 282523-07-3)
- tert-Butyl 2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)-7-azaspiro[3.5]nonane-7-carboxylate (CAS 2304635-20-7)
- N-isobutyl-3-(piperazin-1-yl)propanamide (CAS 89009-63-2)
- 1-(3,4-Dimethoxyphenyl)-1H-imidazole (CAS 190198-38-0)
- 2-(Chloromethyl)-4,5-dimethylthiazole hydrochloride (CAS 52169-55-8)
- 2-(chloroacetyl)-5-methylisoxazol-3(2H)-one (CAS 38100-64-0)
- Tert-butyl 3-(trifluoromethyl)-1H-pyrazole-5-carboxylate (CAS 2104659-22-3)
- Palmitoyl Pentapeptide-4 (CAS 214047-00-4)
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