Ethyl 4-acetyl-3-methyl-5-(phenylamino)thiophene-2-carboxylate CAS 393802-93-2
| CAS No. | 393802-93-2 |
| Molecular Formula | C16H17NO3S |
| Molecular Weight | 303.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Ethyl 4-acetyl-3-methyl-5-(phenylamino)thiophene-2-carboxylate (C16H17NO3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 303.38 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Ethyl 4-acetyl-3-methyl-5-(phenylamino)thiophene-2-carboxylate (CAS 393802-93-2), molecular formula C16H17NO3S and molecular weight 303.38 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Ethyl 4-acetyl-3-methyl-5-(phenylamino)thiophene-2-carboxylate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C16H17NO3S |
| Molecular Weight | 303.38 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Recommended Standards
- Ethyl 2-benzamido-4,5-dimethylthiophene-3-carboxylate (CAS 52535-68-9)
- Ethyl N-tosylbenzimidate (CAS 22158-85-6)
- Ethyl 2-acetamido-5-methyl-4-phenylthiophene-3-carboxylate (CAS 43088-45-5)
- Methyl 3-((2-aminophenyl)thio)-2-hydroxy-3-phenylpropanoate (CAS 902601-70-1)
- 5-Bromo-2-methyl-4-(piperidin-1-yl)pyridine (CAS 103971-18-2)
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- 6,8-Bis(2-chlorophenyl)-2-(isopropylamino)quinazolin-7-ol (CAS 914392-45-3)
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