2-((3-(4-Ethoxyphenyl)-4-oxo-3,4,5,6,7,8-hexahydrobenzo[4,5]thieno[2,3-d]pyrimidin-2-yl)thio)-N-(m-tolyl)acetamide CAS 380453-38-3
| CAS No. | 380453-38-3 |
| Molecular Formula | C27H27N3O3S2 |
| Molecular Weight | 505.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 2-((3-(4-Ethoxyphenyl)-4-oxo-3,4,5,6,7,8-hexahydrobenzo[4,5]thieno[2,3-d]pyrimidin-2-yl)thio)-N-(m-tolyl)acetamide (C27H27N3O3S2) is characterized by a steroid 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. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
2-((3-(4-Ethoxyphenyl)-4-oxo-3,4,5,6,7,8-hexahydrobenzo[4,5]thieno[2,3-d]pyrimidin-2-yl)thio)-N-(m-tolyl)acetamide (CAS 380453-38-3) is a high-purity analytical reference standard with the molecular formula C27H27N3O3S2 and a molecular weight of 505.65 g/mol.
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.
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 | C27H27N3O3S2 |
| Molecular Weight | 505.65 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
Related Ethoxyphenyl Standards
- 2-((3-(4-Ethoxyphenyl)-4-oxo-3,4,5,6,7,8-hexahydrobenzo[4,5]thieno[2,3-d]pyrimidin-2-yl)thio)-N-(p-tolyl)acetamide (CAS 421578-15-6)
- 2-((2-(4-Ethoxyphenyl)-2-oxoethyl)thio)-3-(4-methoxyphenyl)-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3H)-one (CAS 477332-77-7)
- 2-(4-Ethoxyphenyl)-4-oxo-4H-chromen-3-yl 4-bromobenzene-1-sulfonate (CAS 298217-83-1)
- 5-((3-(4-Ethoxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-3-(4-methylbenzyl)-2-thioxothiazolidin-4-one (CAS 623934-82-7)
- 2-{[2-(4-ethoxyphenyl)-5-methyl-1,3-oxazol-4-yl]methyl}-8-(piperidine-1-sulfonyl)-2H,3H-[1,2,4]triazolo[4,3-a]pyridin-3-one (CAS 1707392-09-3)
- 2-(4-Ethoxyphenyl)-4-oxo-4H-chromen-3-yl 2,5-dichlorobenzene-1-sulfonate (CAS 298217-82-0)
- 2-((2-(4-Ethoxyphenyl)-2-oxoethyl)thio)-3-(p-tolyl)-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3H)-one (CAS 499124-12-8)
- N-(2-Ethoxyphenyl)-2-((4-(4-methoxyphenyl)-5-(phenoxymethyl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 539808-36-1)
Recommended Standards
- (1S)-2′-[(Dicyclohexylamino)carbonyl][1,1′-binaphthalene]-2-carboxylic acid (CAS 2646622-00-4)
- (S)-2-Amino-N-(2,2-diethoxyethyl)-3-(2-naphthyl)-N-phenethylpropanamide (CAS 1222068-70-3)
- 7,7-Bis(1-butyl-2-methyl-1H-indol-3-yl)furo[3,4-b]pyridin-5(7H)-one (CAS 304698-49-5)
- (S)-2-Amino-N-(2,2-diethoxyethyl)-3-(1-naphthyl)-N-phenethylpropanamide (CAS 1222068-69-0)
- 2-Bromo-3-fluoro-4-(trifluoromethyl)pyridine (CAS 1227577-05-0)
- 4-cyanobutane-1-sulfonyl chloride (CAS 35517-25-0)
- Methyl 2-bromo-5-methoxyisonicotinate (CAS 1256819-65-4)
- 3-(4-Tert-butylphenyl)-2-methylpropanoic acid (CAS 66735-04-4)
- 4-Fluoro-2-methylbenzene-1-carbothioamide (CAS 1256482-73-1)
- 3-((6-Bromoquinazolin-4-yl)amino)propanoic acid (CAS 446829-14-7)
- 6-(3,5-Difluorophenoxy)hexanenitrile (CAS 1443346-08-4)
- 4-(Benzyloxy)-3-chloro-5-ethoxybenzohydrazide (CAS 1706447-51-9)
- Ethyl 2-methyl-6-oxo-1,4,5,6-tetrahydropyridine-3-carboxylate (CAS 4027-39-8)
- Endo-38a-Pro-Exenatide trifluoroacetate salt (CAS 1678416-95-9)
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