Methyl 5-formyl-4-methylthiophene-2-carboxylate CAS 391936-75-7
| CAS No. | 391936-75-7 |
| Molecular Formula | C8H8O3S |
| Molecular Weight | 184.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Methyl 5-formyl-4-methylthiophene-2-carboxylate (CAS 391936-75-7), molecular formula C8H8O3S and molecular weight 184.21 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Methyl 5-formyl-4-methylthiophene-2-carboxylate (C8H8O3S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 | C8H8O3S |
| Molecular Weight | 184.21 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Sulfur Atoms | 1 |
Related Methyl Standards
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Recommended Standards
- Methyl 5-acetylthiophene-3-carboxylate (CAS 88770-21-2)
- 28210-41-5 4-Ethenylbenzenesulfonic acid homopolymer CHEBI:53278 PSSA Polystyrene sulfonate Tolevamer poly(styrene sulfonic acid) poly(styrene-4-sulfonic acid) poly[1-(4-sulfophenyl)ethylene] polystyrene sulfonic acid polystyrenesulfonic acid (CAS 28210-41-5)
- Methyl 3-acetylthiophene-2-carboxylate (CAS 88105-18-4)
- 4-(Methylsulfonyl)benzaldehyde (CAS 5398-77-6)
- 3-(Dimethylamino)-2-methyl-1-phenylpropan-1-one hydrochloride (CAS 5400-92-0)
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- 5-(4-Chlorophenyl)-2-{[(3,5-dimethylphenyl)methyl]sulfanyl}-4-{2'-fluoro-4'-propyl-[1,1'-biphenyl]-4-yl}pyrimidine (CAS 478248-98-5)
- 5-(4-Nitrophenyl)-6-phenyl-2,3-dihydro-1,4-oxathiine (CAS 2177259-37-7)
- 3-Iodo-4-(methylamino)benzoic acid (CAS 500699-01-4)
- 1-(5-Bromo-1H-indol-3-yl)propan-2-ol (CAS 1784252-24-9)
- Alexitol Sodium (CAS 66813-51-2)
- 2,2,2-Trifluoro-1-(tetrahydrofuran-2-yl)ethan-1-amine (CAS 1556984-95-2)
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