Methyl 3-hydroxy-5-(phenylthio)thiophene-2-carboxylate CAS 104386-71-2
| CAS No. | 104386-71-2 |
| Molecular Formula | C12H10O3S2 |
| Molecular Weight | 266.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Methyl 3-hydroxy-5-(phenylthio)thiophene-2-carboxylate.
Methyl 3-hydroxy-5-(phenylthio)thiophene-2-carboxylate (CAS 104386-71-2), molecular formula C12H10O3S2 and molecular weight 266.34 g/mol, is a CATO reference standard with documented purity and traceability.
Methyl 3-hydroxy-5-(phenylthio)thiophene-2-carboxylate (C12H10O3S2) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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 | C12H10O3S2 |
| Molecular Weight | 266.34 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Sulfur Atoms | 2 |
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Recommended Standards
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- 2-ethynyl-1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridine (CAS 1186502-44-2)
- Sodium 3-([1,2,3,4]thiatriazol-5-ylamino)-benzenesulfonate (CAS 2305079-77-8)
- Methyl 3-(methoxymethyl)benzofuran-2-carboxylate (CAS 885459-91-6)
- 1-(4-{[3-(4-methoxyphenyl)-1,2,4-oxadiazol-5-yl]methyl}piperidin-1-yl)-2-(thiophen-3-yl)ethan-1-one (CAS 1775400-85-5)
- Methyl 5-Nitropicolinate (CAS 29682-14-2)
- Levocetirizine Impurity 72 (CAS CATO-C4X-108372)
- N'-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)-N'-methyl-3-(trifluoromethyl)benzohydrazide (CAS 1023540-28-4)
- Fragment-[9-31]-Semaglutide (CAS CATO-C4X-2226181)
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