4-(5-Methylthiophene-2-carboxamido)benzoic acid CAS 219708-08-4
| CAS No. | 219708-08-4 |
| Molecular Formula | C13H11NO3S |
| Molecular Weight | 261.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-(5-Methylthiophene-2-carboxamido)benzoic acid (CAS 219708-08-4) is a high-purity analytical reference standard with the molecular formula C13H11NO3S and a molecular weight of 261.30 g/mol.
Based on its molecular formula C13H11NO3S, 4-(5-Methylthiophene-2-carboxamido)benzoic acid contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 261.30 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C13H11NO3S |
| Molecular Weight | 261.30 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2019 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methylthiophene Standards
- 3-(5-Methylthiophene-3-carboxamido)benzoic acid (CAS 905394-58-3)
- Methyl 2-(5-methylthiophene-2-carbonyl)benzoate (CAS 1071560-04-7)
- Methyl 2-(3-methylthiophene-2-carbonyl)benzoate (CAS 1443342-17-3)
- 4-(n-Methylthiophene-2-sulfonamido)butanoic acid (CAS 923220-10-4)
- 4-(5-Methylthiophene-2-carbonyl)morpholine-3-carboxylic acid (CAS 1468506-71-9)
- 4-(4-Methylthiophene-3-carbonyl)morpholine-3-carboxylic acid (CAS 1503195-14-9)
- 4-(4-Methylthiophene-3-carbonyl)morpholine-2-carboxylic acid (CAS 1532751-84-0)
- 1-(5-Methylthiophene-2-carbonyl)piperidine-4-carboxylic acid (CAS 1016516-24-7)
Recommended Standards
- 4-(4-Nitrophenyl)-N-2-propen-1-yl-2-thiazolamine (CAS 5898-41-9)
- 4-[(thiophen-2-ylformamido)methyl]benzoic acid (CAS 392716-12-0)
- 4-(2-(Thiophen-2-yl)acetamido)benzoic acid (CAS 436088-76-5)
- 4-Allyl-5-(benzo[d][1,3]dioxol-5-yl)-4H-1,2,4-triazole-3-thiol (CAS 77803-46-4)
- N-(4-Cyclopropoxy-3-(methylamino)phenyl)methanesulfonamide (CAS 1243367-90-9)
- 2-[4-Methyl-6-oxo-2-(pyridin-2-yl)-1,6-dihydropyrimidin-5-yl]acetic Acid (CAS 1193387-71-1)
- 2-Chloro-5-iodo-3-nitrobenzoic acid (CAS 697762-27-9)
- N-(3-Methoxypropyl)-1-methylpiperidin-4-amine disuccinate (CAS 1609407-92-2)
- (5R,9S)-Tert-butyl 9-(furan-2-yl)-6-oxo-2,7-diazaspiro[4.4]nonane-2-carboxylate (CAS 2151025-56-6)
- (2E,3E)-1-{[1,1'-biphenyl]-4-yl}-2-[2-(3,4-dimethylphenyl)hydrazin-1-ylidene]-3-(methoxyimino)propan-1-one (CAS 338965-28-9)
- (R)-2-Amino-2-(4-hydroxycyclohexyl)acetic acid (CAS 209460-85-5)
- 3-Bromo-4-methoxy-1-naphthonitrile (CAS 1707570-89-5)
- Diethyl 2-cyclobutylmalonate (CAS 76731-17-4)
- Tirzepatide Impurity 38 (CAS CATO-C4X-324038)
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