methyl 5-(difluoromethyl)thiophene-2-carboxylate CAS 189331-34-8
| CAS No. | 189331-34-8 |
| Molecular Formula | C7H10F2O2S |
| Molecular Weight | 196.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
methyl 5-(difluoromethyl)thiophene-2-carboxylate (CAS 189331-34-8), molecular formula C7H10F2O2S and molecular weight 196.21 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, methyl 5-(difluoromethyl)thiophene-2-carboxylate (C7H10F2O2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 196.21 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), methyl 5-(difluoromethyl)thiophene-2-carboxylate 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 | C7H10F2O2S |
| Molecular Weight | 196.21 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.) | 2011 |
| Halogen Content | F-containing |
| Sulfur Atoms | 1 |
Related methyl Standards
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- 1-(Difluoromethyl)-2-fluoronaphthalene (CAS 1261456-43-2)
- 1-(Difluoromethyl)-5-fluoronaphthalene (CAS 1261459-07-7)
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Recommended Standards
- (2R,6S)-2,6-Dimethyl-1-(2,2,2-trifluoroethyl)piperazine (CAS 1867455-07-9)
- (4-Amino-furazan-3-yl)-piperidin-1-yl-methanone (CAS 329922-46-5)
- 1-Ethyl-6-(trifluoromethyl)piperidin-3-amine (CAS 1858567-28-8)
- [1-(2,2,2-Trifluoroethyl)piperidin-4-yl]methanamine (CAS 335653-61-7)
- Methyl 2-(3,5-difluorophenyl)-2-hydroxyacetate (CAS 208259-37-4)
- 4-(trifluoromethyl)benzoyl isothiocyanate (CAS 880483-26-1)
- 2-(Azepan-1-ylmethyl)-4-fluorobenzenethiol (CAS 1443309-32-7)
- N-Methyl-N-(piperazin-1-ylmethyl)ethanamine (CAS 153040-15-4)
- 4-Ethoxybenzo[d]oxazole-2-carboxylic acid (CAS 1804087-40-8)
- 2-((Tert-butoxycarbonyl)amino)-2-(1-hydroxycyclopentyl)acetic acid (CAS 105871-45-2)
- 5-(((2-Hydroxyethoxy)methyl)amino)-2-imino-2,3-dihydro-4H-imidazol-4-one (CAS 874769-59-2)
- tert-Butyl 3-[(3,4-difluorophenyl)methyl]-4-oxo-3H,4H,5H,6H,7H,8H-pyrido[4,3-d]pyrimidine-6-carboxylate (CAS 1798531-26-6)
- Methyl phenanthrene-3-carboxylate (CAS 5345-98-2)
- Biotinyl-S6 Phosphate Acceptor Peptide trifluoroacetate salt (CAS 1815618-12-2)
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