5-(3-Ethoxyphenyl)thiophene-2-sulfonic acid CAS 1416438-59-9
| CAS No. | 1416438-59-9 |
| Molecular Formula | C12H12O4S2 |
| Molecular Weight | 284.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 284.35 g/mol gives 5-(3-Ethoxyphenyl)thiophene-2-sulfonic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-(3-Ethoxyphenyl)thiophene-2-sulfonic acid (CAS 1416438-59-9) is a high-purity analytical reference standard with the molecular formula C12H12O4S2 and a molecular weight of 284.35 g/mol.
Structurally, 5-(3-Ethoxyphenyl)thiophene-2-sulfonic acid (C12H12O4S2) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 284.35 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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-(3-Ethoxyphenyl)thiophene-2-sulfonic 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 | C12H12O4S2 |
| Molecular Weight | 284.35 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Sulfur Atoms | 2 |
Related Ethoxyphenyl Standards
- (2E)-3-(4-Ethoxyphenyl)-1-(1-ethyl-3-methyl-1H-pyrazol-4-yl)prop-2-en-1-one (CAS 955563-66-3)
- 4-Ethoxyphenyl 4-propylbenzoate (CAS 53132-08-4)
- 2-(4-Ethoxyphenyl)-5-hexylpyrimidine (CAS 57202-25-2)
- Methyl 6-(4-ethoxyphenyl)-2-formylnicotinate (CAS 1447958-94-2)
- 2-((4-Ethoxyphenyl)carbamoyl)benzoic acid (CAS 7614-49-5)
- (E)-3-(4-ethoxyphenyl)-N-(4-fluorophenyl)acrylamide (CAS 297149-85-0)
- N-(4-Ethoxyphenyl)thiophene-2-sulfonamide (CAS 358666-72-5)
- 2-((4-Ethoxyphenyl)amino)-4,6-dimethylnicotinamide (CAS 328548-73-8)
Recommended Standards
- 7,7-Dimethyl-7H-fluoreno[2,3-b]benzofuran (CAS 1414927-18-6)
- o5-Tert-butylo3a-ethyl1,2,3,4,6,6a-hexahydropyrrolo[3,4-c]pyrrole-3a,5-dicarboxylate (CAS 1424939-88-7)
- Tert-butyl 3-oxo-4-(tetrahydro-2H-pyran-4-yl)piperazine-1-carboxylate (CAS 1400755-13-6)
- rel-((1R,5R,6R)-tert-Butyl 6-carbamoyl-5-(hydroxymethyl)-1-methyl-3-azabicyclo[3.2.0]heptane-3-carboxylate) (CAS 1428154-17-9)
- cis-N1-(2-(5-Chloro-2,4-dimethoxyphenyl)imidazo[1,2-a]pyridin-7-yl)-N4-(4-nitrobenzyl)cyclohexane-1,4-diamine (CAS 2093401-33-1)
- 2-Azaspiro[4.5]decan-8-one (CAS 1508836-95-0)
- 2-(Benzo[d][1,3]dioxol-5-yl)benzo[d]thiazole (CAS 41230-20-0)
- 6-Hydroxy Penicillanic acid (CAS CATO-C4X-175626)
- (1S,4s)-4-(4-amino-1H-pyrazol-1-yl)cyclohexan-1-ol (CAS 1426921-50-7)
- Chromane-8-sulfonamide (CAS 89836-55-5)
- 5-Amino-2,3-dihydro-1h-inden-2-yl methanesulfonate (CAS 1701450-93-2)
- 2-(4-Amino-benzylidene)-1-aza-bicyclo[2.2.2]octan-3-one (CAS 412937-44-1)
- 2-(1H-Benzo[d][1,2,3]triazol-1-yl)-N-ethylacetamide (CAS 865077-99-2)
- Semaglutide impurity 92 (CAS CATO-C4X-222692)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com