4-(4-Methoxybenzoyl)-N-(thiophen-2-ylmethyl)-1H-pyrrole-2-carboxamide CAS 478259-37-9
| CAS No. | 478259-37-9 |
| Molecular Formula | C18H16N2O3S |
| Molecular Weight | 340.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C18H16N2O3S, 4-(4-Methoxybenzoyl)-N-(thiophen-2-ylmethyl)-1H-pyrrole-2-carboxamide contains a steroid core, 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 340.40 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).
4-(4-Methoxybenzoyl)-N-(thiophen-2-ylmethyl)-1H-pyrrole-2-carboxamide (CAS 478259-37-9), molecular formula C18H16N2O3S and molecular weight 340.40 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C18H16N2O3S |
| Molecular Weight | 340.40 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Methoxybenzoyl Standards
- 4-(3-Methoxybenzoyl)-N-(thiophen-2-ylmethyl)-1H-pyrrole-2-carboxamide (CAS 439111-67-8)
- 3-(6-(4-Methoxybenzoyl)-2-oxobenzo[d]oxazol-3(2H)-yl)propanoic acid (CAS 76752-03-9)
- Methyl 2-(4-(4-methoxybenzoyl)-3,4-dihydro-2H-benzo[b][1,4]oxazin-3-yl)acetate (CAS 861212-87-5)
- N'-(2-methoxybenzoyl)-3-(1H-pyrrol-1-yl)thiophene-2-carbohydrazide (CAS 672952-11-3)
- N'-(3-methoxybenzoyl)-3-(1H-pyrrol-1-yl)thiophene-2-carbohydrazide (CAS 672925-23-4)
- N'-(4-methoxybenzoyl)-6-(trifluoromethyl)nicotinohydrazide (CAS 1092346-04-7)
- Methyl 3-(4-methoxybenzoyl)-4-oxo-1,4-dihydroquinoline-8-carboxylate (CAS 1325306-25-9)
- 2-[5-(4-Methoxybenzoyl)-2-thienyl]-3-phenylacrylonitrile (CAS 338966-79-3)
Recommended Standards
- 4-(5-(N,N-diethylsulfamoyl)-1H-benzo[d][1,2,3]triazol-1-yl)butanoic acid (CAS 933254-00-3)
- 4-(3-(Diethylamino)propyl)-5-((3-nitro-1h-1,2,4-triazol-1-yl)methyl)-4h-1,2,4-triazole-3-thiol (CAS 937597-08-5)
- 4-(Aminomethyl)-N-(3-cyano-4-methyl-1H-indol-7-yl)benzenesulfonamide (CAS 2098346-67-7)
- 4-((4-Hydroxy-3-methoxybenzylidene)amino)-3-(m-tolyl)-1H-1,2,4-triazole-5(4H)-thione (CAS 478255-97-9)
- 2-[(3-Chlorophenyl)carbamoyl]phenyl N,N-dimethylsulfamate (CAS 338396-35-3)
- 3-((2,5-Dichlorophenyl)sulfinyl)propanoic acid (CAS 1249655-47-7)
- 3-{[(4-chlorophenyl)methyl]amino}propanoic acid hydrochloride (CAS 1172479-10-5)
- 1-(2-Chloro-6-fluorophenyl)cyclobutanecarbonitrile (CAS 1152566-44-3)
- 1-Bromo-3-((2-chloroethyl)sulfonyl)benzene (CAS 1341100-35-3)
- Venlafaxine Impurity 36 (CAS 1062609-99-7)
- Tert-butyl 4-((5-aminopyridin-2-yl)amino)piperidine-1-carboxylate (CAS 936368-89-7)
- Regaloside C (CAS 117591-85-2)
- 2-[7-Chloro-2-(pyridin-3-yl)-1h-indol-3-yl]ethan-1-amine hydrochloride (CAS 1052414-08-0)
- Semaglutide Impurity 123 (CAS 71997-93-8)
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