Methyl 5-hydroxythiophene-2-carboxylate CAS 107433-27-2
| CAS No. | 107433-27-2 |
| Molecular Formula | C6H6O3S |
| Molecular Weight | 158.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Methyl 5-hydroxythiophene-2-carboxylate is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Methyl 5-hydroxythiophene-2-carboxylate (CAS 107433-27-2), molecular formula C6H6O3S and molecular weight 158.18 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Methyl 5-hydroxythiophene-2-carboxylate (C6H6O3S) 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 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 158.18 g/mol, it falls into the medium-molecular-weight range. 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.
As a certified reference material (CRM), Methyl 5-hydroxythiophene-2-carboxylate 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 | C6H6O3S |
| Molecular Weight | 158.18 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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.) | 1987 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- Methyl 4-hydroxythiophene-3-carboxylate (CAS 65369-21-3)
- Ethyl 4-hydroxythiophene-3-carboxylate (CAS 1006-44-6)
- ethyl 4-hydroxythiophene-2-carboxylate (CAS 133019-68-8)
- Ethyl 3-hydroxythiophene-2-carboxylate (CAS 2158-88-5)
- Ethyl 5-hydroxythiophene-2-carboxylate (CAS 7210-60-8)
- 5-hydroxythiophene-2-carboxylic acid (CAS 1881320-94-0)
- 3-Hydroxythiophene-2-carboxylic acid (CAS 5118-07-0)
- 4-Hydroxythiophene-2-carboxylic acid (CAS 40748-90-1)
Recommended Standards
- 4,5-diamino-2-thiouracil (CAS 1004-76-8)
- 4-(Methylthio)-1H-1,2,3-triazole-5-carboxamide (CAS 107487-63-8)
- 4-Hydroxyphenylacetic acid-d6 (CAS 100287-06-7)
- Methyl 5-aminoisothiazole-3-carboxylate, 96% (CAS 1094070-51-5)
- 3-(2-Chloro-6-fluoro-benzylidene)-2,3-dihydro-1H-cyclopenta[b]quinoline-9-carboxylic acid (CAS 380574-64-1)
- 2-Nitrobenzyl 4-methylbenzenesulfonate (CAS 20444-09-1)
- 1,6,6-Trimethylpiperidin-3-amine (CAS 1890044-92-4)
- 5-Bromo-2-methoxy-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1073353-75-9)
- 6-(Ethylamino)nicotinaldehyde (CAS 1216242-54-4)
- 2,2-Dimethyl-3-(pyridin-3-yl)propanoic acid (CAS 162648-14-8)
- 2-Ethoxybenzo[cd]indole (CAS 80676-08-0)
- (S)-2'-Methoxy-[1,1'-binaphthalen]-2-ol (CAS 35193-69-2)
- 3-BROMO-5-CHLORO-2-NITROPHENOL (CAS 1936363-37-9)
- Semaglutide Impurity 158 (x TFA Salt) (CAS CATO-C4X-2226158)
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