Ethyl 2-(2-((5H-[1,2,4]triazino[5,6-b]indol-3-yl)thio)acetamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate CAS 329732-77-6
| CAS No. | 329732-77-6 |
| Molecular Formula | C22H21N5O3S2 |
| Molecular Weight | 467.56 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-(2-((5H-[1,2,4]triazino[5,6-b]indol-3-yl)thio)acetamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 329732-77-6) is a high-purity analytical reference standard with the molecular formula C22H21N5O3S2 and a molecular weight of 467.56 g/mol.
Ethyl 2-(2-((5H-[1,2,4]triazino[5,6-b]indol-3-yl)thio)acetamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (C22H21N5O3S2) contains a steroid core, 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. 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 | C22H21N5O3S2 |
| Molecular Weight | 467.56 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Recommended Standards
- 5-[4-(2-Fluorophenyl)piperazin-1-yl]-1-(4-methylbenzenesulfonyl)-4,5,6,7-tetrahydro-1H-indol-4-one (CAS 439094-52-7)
- N-(1-benzyl-3-cyano-4,5-diphenyl-1H-pyrrol-2-yl)-2-methylbenzamide (CAS 477887-31-3)
- 5-(4-(Benzyloxy)phenyl)-N'-(4-(diethylamino)benzylidene)-1H-pyrazole-3-carbohydrazide (CAS 303106-93-6)
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- 5-Chloro-4-methyl-3,4-dihydroquinoxalin-2(1H)-one (CAS 1247021-95-9)
- 1-Ethyl-1H-pyrazole-5-carboxylic acid-d5 (CAS 2735654-39-2)
- D-Pro36-Tirzepatide (CAS CATO-CPTD788903)
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