3-(Methylsulfonyl)thiophene CAS 38695-58-8
| CAS No. | 38695-58-8 |
| Molecular Formula | C5H6O2S2 |
| Molecular Weight | 162.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3-(Methylsulfonyl)thiophene (CAS 38695-58-8), molecular formula C5H6O2S2 and molecular weight 162.23 g/mol, is a CATO reference standard with documented purity and traceability.
3-(Methylsulfonyl)thiophene (C5H6O2S2) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C5H6O2S2 |
| Molecular Weight | 162.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1968 |
| Sulfur Atoms | 2 |
Related Methylsulfonyl Standards
- 2-(Methylsulfonyl)thiophene (CAS 38695-60-2)
- 1-(1-(Methylsulfonyl)cyclopropyl)ethan-1-one (CAS 2169130-85-0)
- 1-Methyl-5-(methylsulfonyl)-1H-tetrazole (CAS 96107-86-7)
- 3-(Methylsulfonyl)-1,2,4-oxadiazol-5-amine (CAS 55864-41-0)
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- (S)-4-(Methylsulfonyl)pyrrolidin-2-one (CAS 20182-97-2)
- 2-(Methylsulfonyl)cyclopentan-1-amine (CAS 1221723-17-6)
Recommended Standards
- 3-(Isopentyloxy)propane-1,2-diol (CAS 627-92-9)
- 3-(piperidin-1-yl)pyridine (CAS 90872-73-4)
- 3-(4-methylpyrrolidin-2-yl)pyridine (CAS 603090-13-7)
- 3-(Piperidin-3-yl)pyridine (CAS 31251-28-2)
- 2-Chloro-N-((5-chloro-8-hydroxyquinolin-7-yl)methyl)acetamide (CAS 909236-73-3)
- (2-((Methylsulfonyl)methyl)phenyl)boronic acid (CAS 123088-60-8)
- 5-Chloro-3-methylimidazo[1,5-c]pyrimidine-7-carbonitrile (CAS 1352881-06-1)
- (6-Fluoroquinolin-3-yl)boronic acid (CAS 1264511-20-7)
- 2-Chloro-N-(3,5-dimethoxyphenyl)acetamide (CAS 66932-96-5)
- Faropenem Impurity 54 (CAS CATO-C4X-128954)
- Ethyl 4-(2-chloroethyl)piperazine-1-carboxylate (CAS 64822-11-3)
- 3-Benzylpyridine (CAS 620-95-1)
- (Z)-2-Nitroethenylbenzene (CAS 15241-23-3)
- Galanin Message Associated Peptide (1-41) amide trifluoroacetate salt (CAS 132699-74-2)
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