3-Methoxy-5-methyl-2-thiophenecarboxylic Acid CAS 83261-26-1
| CAS No. | 83261-26-1 |
| Molecular Formula | C7H8O3S |
| Molecular Weight | 172.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3-Methoxy-5-methyl-2-thiophenecarboxylic Acid (CAS 83261-26-1), a certified reference material (molecular formula C7H8O3S, MW 172.20 g/mol) for analytical method development and quality control.
Based on its molecular formula C7H8O3S, 3-Methoxy-5-methyl-2-thiophenecarboxylic Acid contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 172.20 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
CATO manufactures 3-Methoxy-5-methyl-2-thiophenecarboxylic 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 | C7H8O3S |
| Molecular Weight | 172.20 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.) | 1980 |
| Sulfur Atoms | 1 |
Related Methoxy Standards
- 5-Methoxy-2-(methylthio)pyrimidin-4(3H)-one (CAS 1671-08-5)
- 5-Methoxy-2-(methylsulfinyl)pyrimidine (CAS 17148-36-6)
- 2-Methoxy-2-(thiophen-2-yl)acetic acid (CAS 5371-94-8)
- 4-Methoxy-2-methylthiophene-3-carboxylic acid (CAS 87675-98-7)
- 5-Methoxy-4-methylthiophene-2-carboxylic acid (CAS 2757171-08-5)
- Methyl 5-Methoxy-2-thiophenecarboxylate (CAS 77133-25-6)
- N-Methoxy-N-methyl thiazole-5-carboxamide (CAS 898825-89-3)
- N-Methoxy-N-methyl-thiazole-2-carboxamide (CAS 885278-18-2)
Recommended Standards
- 3-Hydroxy-3-(thiophen-2-yl)propanoic acid (CAS 26359-15-9)
- 3-Methyl-5-(methylamino)-1,2-thiazole-4-carboxylic acid (CAS 871217-45-7)
- 3-fluoroimidazo[1,2-a]pyridine-2-carbaldehyde (CAS 2170670-99-0)
- 3-methyl-5-(methylsulfanyl)furan-2-carboxylic acid (CAS 2031259-10-4)
- 1-(4-Cyanophenoxy)cyclopentane-1-carboxylic acid (CAS 1304901-32-3)
- 3-[4-oxo-4-(thiophen-2-yl)butanamido]propanoic acid (CAS 874623-31-1)
- 5-Ethylfuran-2-carboxamide (CAS 102074-22-6)
- 2-Chloro-n-(2-chloro-4,6-dimethylphenyl)acetamide (CAS 444325-43-3)
- 2-(4,5-Dichloro-2-oxazol-2-yl-benzoyl)-3-hydroxy-cyclohex-2-enone (CAS 1231552-31-0)
- Tetrahydrothiopyran-4-carbonitrile (CAS 195503-40-3)
- N-(4-Aminophenyl)-2-(2-methoxyphenoxy)propanamide (CAS 953754-06-8)
- 4-Chloro-2-ethyl-5-((4-methoxybenzyl)oxy)pyridazin-3(2H)-one (CAS 88094-00-2)
- 5-Amino-1-(2-ethylphenyl)-1H-pyrazole-4-carboxamide (CAS 792953-12-9)
- Semaglutide Sodium Salt (CAS CATO-C4X-222620)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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