2-(Difluoromethyl)-5-ethynylthiophene CAS 2304404-75-7
| CAS No. | 2304404-75-7 |
| Molecular Formula | C7H4F2S |
| Molecular Weight | 158.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C7H4F2S, 2-(Difluoromethyl)-5-ethynylthiophene contains sulfur-containing functionality, fluorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 158.17 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies 2-(Difluoromethyl)-5-ethynylthiophene (CAS 2304404-75-7), a certified reference material (molecular formula C7H4F2S, MW 158.17 g/mol) for analytical method development and quality control.
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.
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 | C7H4F2S |
| Molecular Weight | 158.17 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Halogen Content | F-containing |
| Sulfur Atoms | 1 |
Related Difluoromethyl Standards
- 2-(Difluoromethyl)benzyl alcohol (CAS 1018678-49-3)
- (6-(Difluoromethyl)pyridin-3-yl)methanamine (CAS 1211534-72-3)
- (2-(Difluoromethyl)pyridin-4-yl)methanamine (CAS 1211589-22-8)
- (5-(Difluoromethyl)pyridin-3-yl)methanamine (CAS 1256786-89-6)
- [4-(Difluoromethyl)pyridin-2-yl]methanamine (CAS 1256806-04-8)
- [5-(Difluoromethyl)pyridin-2-yl]methanamine (CAS 1256806-69-5)
- 5-(Difluoromethyl)-2-methylphenol (CAS 1261454-45-8)
- 3-(Difluoromethyl)-2-methylphenol (CAS 1261479-74-6)
Recommended Standards
- 2-(1-(1-Fluorovinyl)cyclobutyl)acetic acid (CAS 2138111-32-5)
- 4-fluoro-1H,2H,3H-pyrrolo[2,3-b]pyridin-2-one (CAS 956460-93-8)
- 1-(1-(Fluoromethyl)-2-oxabicyclo[2.1.1]hexan-4-yl)ethanone (CAS 2573214-02-3)
- 4-Fluoro-1-methyl-3-propyl-1H-pyrazol-5-ol (CAS 80171-21-7)
- (3-Methoxy-1-methyl-1H-pyrazol-5-yl)methanamine oxalate (CAS 1956381-58-0)
- (4'-Bromo-[1,1'-biphenyl]-4-yl)(methyl)sulfane (CAS 3393-00-8)
- 2-(4-Methylpiperidin-1-yl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1310383-51-7)
- Ethyl 2-(3,5-dimethyl-4-(pyrrolidin-2-yl)-1H-pyrazol-1-yl)acetate (CAS 1708268-95-4)
- 5-Methyl-3-phenyl-4,5-dihydro-1,2-oxazole-5-carboxylic acid (CAS 842954-77-2)
- 2-Methyl-4-oxo-4-phenylbutyric Acid (CAS 1771-65-9)
- N-(Benzo[d][1,3]dioxol-5-yl)-2-(thiophen-2-ylsulfonyl)acetamide (CAS 1021046-56-9)
- 9-Anthraceneboronic Acid (contains varying amounts of Anhydride) (CAS 100622-34-2)
- [(2,3-dimethylphenyl)methyl](methyl)amine (CAS 110931-75-4)
- Neuropeptide Y (2-36), amide, porcine (CAS 102961-52-4)
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