4-(Trifluoromethyl)-2,3-dihydrothiophene 1,1-dioxide CAS 71654-37-0
| CAS No. | 71654-37-0 |
| Molecular Formula | C5H5F3O2S |
| Molecular Weight | 186.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-(Trifluoromethyl)-2,3-dihydrothiophene 1,1-dioxide is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 4-(Trifluoromethyl)-2,3-dihydrothiophene 1,1-dioxide (CAS 71654-37-0), a certified reference material (molecular formula C5H5F3O2S, MW 186.15 g/mol) for analytical method development and quality control.
4-(Trifluoromethyl)-2,3-dihydrothiophene 1,1-dioxide (C5H5F3O2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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), 4-(Trifluoromethyl)-2,3-dihydrothiophene 1,1-dioxide 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 | C5H5F3O2S |
| Molecular Weight | 186.15 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | F-containing |
| Sulfur Atoms | 1 |
Related Trifluoromethyl Standards
- 3-(trifluoromethyl)-2,5-dihydrothiophene 1,1-Dioxide (CAS 71654-38-1)
- 3-[(4-Trifluoromethyl)phenyl]-1-propene (CAS 1813-97-4)
- (2-(Trifluoromethyl)cyclopropyl)benzene (CAS 1822956-84-2)
- 3-[(2-Trifluoromethyl)phenyl]-1-propene (CAS 62826-30-6)
- 4-(Trifluoromethyl)-1H-indazole (CAS 1000339-98-9)
- 2-(3-(Trifluoromethyl)pyridin-2-yl)acetonitrile (CAS 1000512-60-6)
- 2-(Trifluoromethyl)pyridine-3-acetonitrile (CAS 1000529-97-4)
- 2-(4-(Trifluoromethyl)pyridin-2-yl)acetonitrile (CAS 1000536-10-6)
Recommended Standards
- 3-Pyridinol, 6-amino-5-(dimethylphosphinyl)- (CAS 2886000-57-1)
- 2-(2-(Difluoromethyl)phenyl)acetic acid (CAS 1000517-62-3)
- 2-[4-(difluoromethyl)phenyl]acetic acid (CAS 1000524-74-2)
- (2,4-Diaminopyrimidin-5-yl)dimethylphosphine oxide (CAS 2460756-88-9)
- 5-(5-Bromo-2-fluorophenyl)-5,6,6-trimethylmorpholin-3-one (CAS 1363405-38-2)
- 3-(4-ethylphenyl)-1H-pyrazole-5-carbohydrazide (CAS 1026764-45-3)
- 2-Fluoro-1H-pyrrolo[2,3-b]pyridine (CAS 1261771-03-2)
- 6-Amino-2-bromo-pyridin-3-ol (CAS 1187930-22-8)
- 6-Amino-2-ethyl-[3,4'-bipyridine]-5-carbonitrile (CAS 129090-38-6)
- Methyl (R)-2-bromo-2-(3-chlorophenyl)acetate (CAS 2382203-43-0)
- 7,7-DIMETHYL-4,5,6,7-TETRAHYDRO-2H-PYRAZOLO[4,3-C]PYRIDINE HCL (CAS 1194374-10-1)
- tert-butyl (3-methoxypropyl)carbamate (CAS 911300-60-2)
- (2S)-2-{[(3-Oxo-3,4-dihydro-1(2H)-quinoxalinyl)carbonyl]amino}-3-phenylpropanoic Acid (CAS 1173681-44-1)
- D-[His]1-Semaglutide X TFA salt (CAS CATO-CPTD788634)
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