Ethyl 6-methyl-2-(5-methylfuran-2-carboxamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate CAS 315677-49-7
| CAS No. | 315677-49-7 |
| Molecular Formula | C18H21NO4S |
| Molecular Weight | 347.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 347.43 g/mol gives Ethyl 6-methyl-2-(5-methylfuran-2-carboxamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Ethyl 6-methyl-2-(5-methylfuran-2-carboxamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 315677-49-7), molecular formula C18H21NO4S and molecular weight 347.43 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Ethyl 6-methyl-2-(5-methylfuran-2-carboxamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (C18H21NO4S) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
As a certified reference material (CRM), Ethyl 6-methyl-2-(5-methylfuran-2-carboxamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-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 | C18H21NO4S |
| Molecular Weight | 347.43 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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 6-ethyl-2-(furan-2-carboxamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 353478-78-1)
- Methyl 4-((N-(3,4-dimethylphenyl)methylsulfonamido)methyl)benzoate (CAS 358377-75-0)
- Ethyl 4-(N-(2-methylbenzyl)methylsulfonamido)benzoate (CAS 765925-52-8)
- Methyl 6-(tert-butyl)-2-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 438532-45-7)
- 1-(2-(4-Bromophenyl)-2-oxoethyl)pyrrolidin-2-one (CAS 832753-10-3)
- 1-(Tert-butyl) 4-ethyl 3-aminopiperidine-1,4-dicarboxylate (CAS 910332-54-6)
- 2-(3-Acetyl-1H-pyrrol-2-yl)acetic acid (CAS 153602-58-5)
- 2-((6-Methoxynaphthalen-2-yl)oxy)acetohydrazide (CAS 438219-62-6)
- n-(1-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)cyclopropyl)methanesulfonamide (CAS 890172-55-1)
- 4-(6-Oxo-3-phenylpyridazin-1(6h)-yl)butanoic acid (CAS 346407-12-3)
- Sulfo-SMPB (sodium) (CAS 92921-26-1)
- Methyl 3-(2-formyl-1H-indol-1-yl)propanoate (CAS 1438805-17-4)
- Ethyl 2-(4-bromobenzamido)-4,5-dimethylthiophene-3-carboxylate (CAS 299405-12-2)
- Insulin aspart (CAS 116094-23-6)
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