Ethyl 2-amino-4-methyl-5-(p-tolylcarbamoyl)thiophene-3-carboxylate CAS 303141-22-2
| CAS No. | 303141-22-2 |
| Molecular Formula | C16H18N2O3S |
| Molecular Weight | 318.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 2-amino-4-methyl-5-(p-tolylcarbamoyl)thiophene-3-carboxylate (CAS 303141-22-2) is a high-purity analytical reference standard with the molecular formula C16H18N2O3S and a molecular weight of 318.39 g/mol.
Ethyl 2-amino-4-methyl-5-(p-tolylcarbamoyl)thiophene-3-carboxylate (C16H18N2O3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures Ethyl 2-amino-4-methyl-5-(p-tolylcarbamoyl)thiophene-3-carboxylate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C16H18N2O3S |
| Molecular Weight | 318.39 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
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Recommended Standards
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- 3,5-Diiodo-6-methylpyridin-2-ol (CAS 858851-91-9)
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- 2-Hydrazinyl-6-(trifluoromethyl)pyridine (CAS 94239-06-2)
- (S)-2,2-difluoro-7-methyl-6,7-dihydro-[1,3]dioxolo[4,5-f]benzofuran-7-carboxylic acid (CAS 2068724-33-2)
- Fmoc-Aib-OH (CAS 94744-50-0)
- 2-Methyl-3-(2,4,6-trimethylphenyl)-1-propene (CAS 951893-39-3)
- Tert-butyl (1-(cyclohexanecarbonyl)piperidin-4-yl)carbamate (CAS 1091523-98-6)
- 1-Ethyl-2-methyl-4-nitro-1h-imidazole (CAS 89128-07-4)
- Retatrutide (CAS 2381089-83-2)
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