3-(Thiophene-2-carboxamido)benzoic Acid CAS 24341-72-8
| CAS No. | 24341-72-8 |
| Molecular Formula | C12H9NO3S |
| Molecular Weight | 247.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3-(Thiophene-2-carboxamido)benzoic Acid (CAS 24341-72-8), molecular formula C12H9NO3S and molecular weight 247.27 g/mol, is a CATO reference standard with documented purity and traceability.
3-(Thiophene-2-carboxamido)benzoic Acid (C12H9NO3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C12H9NO3S |
| Molecular Weight | 247.27 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.) | 1963 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Thiophene Standards
- 2-(Thiophene-2-carboxamido)benzoic Acid (CAS 33405-06-0)
- 2-(Thiophene-3-amido)benzoic acid (CAS 878465-86-2)
- 4-(Thiophene-2-amido)benzoic acid (CAS 25700-63-4)
- 4-(Thiophene-2-carbonyl)phenyl acetate (CAS 106882-30-8)
- Methyl 2-(thiophene-2-carbonyl)benzoate (CAS 873548-66-4)
- N-[2-(Thiophene-2-sulfonamido)ethyl]acetamide (CAS 440639-50-9)
- 1-(thiophene-2-sulfonyl)piperidin-4-one 216983-37-8 Z45425052 (CAS 216983-37-8)
- 3-(Thiophene-3-carboxamido)benzoic acid (CAS 923789-02-0)
Recommended Standards
- 3-(4-Nitrophenyl)-5,6-dihydroimidazo[2,1-b]thiazole (CAS 40229-93-4)
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- 3-(4-Fluorophenyl)-5-(piperidin-3-yl)-1,2,4-oxadiazole (CAS 851882-55-8)
- 3-Amino-5-(furan-2-yl)-2-methylthieno[2,3-d]pyrimidin-4(3H)-one (CAS 301688-22-2)
- 2-((4,6-Difluoro-1,3,5-triazin-2-yl)amino)benzene-1,4-disulfonic acid (CAS 69563-72-0)
- 2-(1-Aminoethyl)benzene-1,4-diol (CAS 926186-84-7)
- 1-(3-Methoxyphenyl)-3-oxocyclohexanecarboxylic acid (CAS 1956370-62-9)
- 4-(3,4-Dihydroxyphenyl)-1,2,3,4-tetrahydroquinoline-7,8-diol hydrobromide (CAS 119085-25-5)
- 3-(Ethylcarbamoyl)-1,3-thiazolidine-4-carboxylic acid (CAS 1008385-67-8)
- Methyl (R)-2-amino-3-(5-fluoropyridin-2-yl)propanoate (CAS 1213419-50-1)
- Acotiamide Impurity 15 (CAS CATO-C4X-111415)
- 5-Methylimidazo[1,2-a]pyridine-6-carbaldehyde (CAS 926310-59-0)
- 1-Boc-4-(phenylamino)piperidine (CAS 125541-22-2)
- Tirzepatide Impurity 10 (CAS CATO-C4X-324010)
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