Ethyl 2-acetamido-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate CAS 5919-29-9
| CAS No. | 5919-29-9 |
| Molecular Formula | C13H17NO3S |
| Molecular Weight | 267.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Ethyl 2-acetamido-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate (CAS 5919-29-9) is a high-purity analytical reference standard with the molecular formula C13H17NO3S and a molecular weight of 267.34 g/mol.
The molecular framework of Ethyl 2-acetamido-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate (C13H17NO3S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C13H17NO3S |
| Molecular Weight | 267.34 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- 2-Acetamido-4-(thiophen-2-yl)thiophene-3-carboxylic acid (CAS 380640-18-6)
- 5-Acetamido-n-[(methylcarbamothioyl)amino]pyridine-3-carboxamide (CAS 1421602-20-1)
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- ethyl 3-aminocyclobutane-1-carboxylate hydrochloride (CAS 1375303-78-8)
- Sodium 8-hydroxynaphthalene-1,6-disulfonate (CAS 83732-80-3)
- 4-(3-Diethylamino-propylamino)-1,1-dioxo-tetrahydro-1lambda*6*-thiophen-3-ol hydrochloride (CAS 1185298-91-2)
- 73402-28-5 3-(6-Oxo-3-phenyl-5,6-dihydropyridazin-1(4H)-yl)propanoic acid MFCD14281079 (CAS 73402-28-5)
- 1-(2-(1H-indol-3-yl)ethyl)piperidin-4-amine (CAS 35633-77-3)
- Semaglutide impurity 199 (CAS CATO-C4X-2226199)
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