5-(Ethylsulfanyl)thiophene-2-carboxylic acid CAS 101861-40-9
| CAS No. | 101861-40-9 |
| Molecular Formula | C7H8O2S2 |
| Molecular Weight | 188.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-(Ethylsulfanyl)thiophene-2-carboxylic acid (CAS 101861-40-9), molecular formula C7H8O2S2 and molecular weight 188.27 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 5-(Ethylsulfanyl)thiophene-2-carboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 188.27 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 5-(Ethylsulfanyl)thiophene-2-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H8O2S2 |
| Molecular Weight | 188.27 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Sulfur Atoms | 2 |
Related Ethylsulfanyl Standards
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- 3-(Ethylsulfanyl)pyrazine-2-carboxylic acid (CAS 74002-58-7)
- 4-(ethylsulfanyl)-1,2,3,4-tetrahydroquinoline (CAS 197142-19-1)
- 2-(Ethylsulfanyl)pyridine-4-carboxylic acid (CAS 1019485-25-6)
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- 1-[2-(Ethylsulfanyl)phenyl]propan-2-one (CAS 2126161-27-9)
Recommended Standards
- 2-(2,4-Dimethyl-1H-indol-3-yl)ethan-1-amine (CAS 1018592-84-1)
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- 2-Methyl-2-((4-methylbenzyl)amino)propanenitrile (CAS 1018265-76-3)
- 3-(Pentan-2-ylamino)benzonitrile (CAS 1019544-43-4)
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- Methyl 2-amino-5-(aminocarbonyl)-4-methylthiophene-3-carboxylate (CAS 350996-94-0)
- 7-Bromo-2-methyl-2-phenyl-2,3-dihydroquinazolin-4(1H)-one (CAS 1260811-90-2)
- 2-[3-(Pyrrolidin-3-yl)-1,2,4-oxadiazol-5-yl]pyridine (CAS 1256805-63-6)
- Propyl Nicotinate (CAS 7681-15-4)
- Ruxolitinib Impurity 77 (CAS 3016399-21-3)
- 2-(3,4-Difluorophenyl)acetonitrile (CAS 658-99-1)
- Ethyl (R)-3-amino-3-(benzo[d][1,3]dioxol-5-yl)propanoate (CAS 149520-08-1)
- [5-31]-Semaglutide (CAS CATO-C4X-2226263)
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