N,5-bis(4-methoxyphenyl)thiophene-2-carboxamide CAS 344263-82-7
| CAS No. | 344263-82-7 |
| Molecular Formula | C19H17NO3S |
| Molecular Weight | 339.41 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.
N,5-bis(4-methoxyphenyl)thiophene-2-carboxamide (CAS 344263-82-7) is a high-purity analytical reference standard with the molecular formula C19H17NO3S and a molecular weight of 339.41 g/mol.
N,5-bis(4-methoxyphenyl)thiophene-2-carboxamide (C19H17NO3S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. 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 | C19H17NO3S |
| Molecular Weight | 339.41 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 |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Recommended Standards
- N-(p-tolyl)-2-((5-(p-tolyl)-1,3,4-oxadiazol-2-yl)thio)acetamide (CAS 482614-91-5)
- N,N-dimethyl-2-phenyl-5-(phenylsulfonyl)pyrimidin-4-amine (CAS 478080-98-7)
- N-(o-Tolyl)-2-((5-(o-tolyl)-1,3,4-oxadiazol-2-yl)thio)acetamide (CAS 332175-47-0)
- N'-[(1E)-1-(4-Methoxyphenyl)ethylidene]-3-(1H-pyrrol-1-yl)thiophene-2-carbohydrazide (CAS 478076-92-5)
- 4,7-Dihydroxyisobenzofuran-1(3H)-one (CAS 177036-31-6)
- Methyl 2-methyl-7-oxo-5,6,7,8-tetrahydroquinazoline-4-carboxylate (CAS 944902-51-6)
- 3-Fluoro-4-(3-methoxyphenyl)benzoic acid (CAS 1261924-36-0)
- (R)-1-(3,5-difluorophenyl)-2,2-dimethylpropan-1-amine (CAS 1389821-65-1)
- (4,5-dimethoxypyridin-2-yl)methanamine (CAS 1256790-82-5)
- Avanafil Impurity 6 (CAS 330784-50-4)
- Nicardipine EP Impurity A (Dehydro Nicardipine) (CAS 59875-58-0)
- tert-Butyl 2-((tert-butoxycarbonyl)amino)hex-5-enoate (CAS 151294-93-8)
- N-(thiazol-2-yl)pyrrolidine-2-carboxamide (CAS 787498-56-0)
- Semaglutide impurity 233 (CAS CATO-C4X-2226233)
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