2-(Methylsulfonyl)thiophene-3-carboxylic acid CAS 71154-33-1
| CAS No. | 71154-33-1 |
| Molecular Formula | C6H6O4S2 |
| Molecular Weight | 206.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 206.24 g/mol gives 2-(Methylsulfonyl)thiophene-3-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-(Methylsulfonyl)thiophene-3-carboxylic acid (CAS 71154-33-1), molecular formula C6H6O4S2 and molecular weight 206.24 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C6H6O4S2, 2-(Methylsulfonyl)thiophene-3-carboxylic acid contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 206.24 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).
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), 2-(Methylsulfonyl)thiophene-3-carboxylic acid 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 | C6H6O4S2 |
| Molecular Weight | 206.24 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Sulfur Atoms | 2 |
Related Methylsulfonyl Standards
- 1-(Methylsulfonyl)cyclohexane-1-carboxylic acid (CAS 1249262-30-3)
- 1-(4-(Methylsulfonyl)piperazin-1-yl)ethan-1-one (CAS 1342578-40-8)
- 3-(Methylsulfonyl)-9-oxa-3,7-diazabicyclo[3.3.1]Nonane (CAS 1422140-49-5)
- 1-(2-(Methylsulfonyl)ethyl)cyclobutane-1-carboxylic acid (CAS 1519916-41-6)
- 2-Methyl-1-(methylsulfonyl)cyclopentane-1-carboxylic acid (CAS 1541266-53-8)
- 4-[[(Methylsulfonyl)oxy]methyl]cyclohexanone (CAS 1598384-36-1)
- 2-(Methylsulfonyl)naphthalene (CAS 35330-75-7)
- 9-(Methylsulfonyl)-3-oxa-7,9-diazabicyclo[3.3.1]nonane (CAS 2376607-63-3)
Recommended Standards
- 2-(Hydroxymethyl)-4-methyl-1-phenylpyrazolidin-3-one (CAS 5674-50-0)
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- 2-(Piperazin-1-yl)pyridine-3-carboxamide (CAS 87394-64-7)
- D-Digitoxose (CAS 527-52-6)
- Methyl 2-butyl-6-chloropyrimidine-4-carboxylate (CAS 1707370-01-1)
- 4-((Piperidin-3-yloxy)methyl)pyridine dihydrochloride (CAS 1185319-69-0)
- 2-methoxy-4-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1420998-43-1)
- 1,3-Dimethyl-5-fluoro-2-iodobenzene (CAS 14659-59-7)
- 4-Cyano-N-(3-methyl-1,2-oxazol-5-yl)benzamide (CAS 866043-21-2)
- 2-(2-Bromophenoxy)pyridine (CAS 94191-74-9)
- 4-(Tert-butoxycarbonyl)-2,3,4,5-tetrahydrobenzo[f][1,4]oxazepine-7-carboxylic acid (CAS 1142210-79-4)
- 2-(2,4-Dichloro-5-methylphenoxy)acetic acid (CAS 1556-01-0)
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