2-((3-Ethyl-5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)thio)-N-(2-methoxyphenyl)acetamide CAS 335399-54-7
| CAS No. | 335399-54-7 |
| Molecular Formula | C19H21N3O3S2 |
| Molecular Weight | 403.52 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 2-((3-Ethyl-5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)thio)-N-(2-methoxyphenyl)acetamide (C19H21N3O3S2) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 403.52 g/mol, it falls into the moderately-high-molecular-weight range. 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).
CATO supplies 2-((3-Ethyl-5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)thio)-N-(2-methoxyphenyl)acetamide (CAS 335399-54-7), a certified reference material (molecular formula C19H21N3O3S2, MW 403.52 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 2-((3-Ethyl-5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)thio)-N-(2-methoxyphenyl)acetamide under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C19H21N3O3S2 |
| Molecular Weight | 403.52 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
Related Ethyl Standards
- 2-(3,5-Dimethyl-1H-pyrazole-1-carbonyl)-N-(3,5-dimethylphenyl)-N-methylthiophene-3-sulfonamide (CAS 1207022-15-8)
- N-(2-(3,5-dimethyl-1H-pyrazole-1-carbonyl)thiophen-3-yl)-N-ethyl-4-methylbenzenesulfonamide (CAS 1325303-32-9)
- N-(2-(3,5-dimethyl-1H-pyrazole-1-carbonyl)thiophen-3-yl)-4-ethyl-N-methylbenzenesulfonamide (CAS 1325303-98-7)
- N-[2-(3,5-Dimethyl-1H-pyrazole-1-carbonyl)thiophen-3-yl]-N,3,4-trimethylbenzene-1-sulfonamide (CAS 1325305-25-6)
- 2-((3-Ethyl-5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)thio)-N-(3-methoxyphenyl)acetamide (CAS 578734-75-5)
- 2-((3-Ethyl-5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)thio)-N-(4-methoxyphenyl)acetamide (CAS 335399-46-7)
- 2-[3-(2,5-Dimethyl-1H-pyrrol-1-yl)thiophen-2-yl]-6-(4-fluorophenyl)pyrazolo[1,5-a]pyrimidin-7-amine (CAS 439095-87-1)
- [2,5-Dimethyl-4-oxazol-2-yl-3-(propane-1-sulfonyl)-phenyl]-(5-hydroxy-1-methyl-1H-pyrazol-4-yl)-methanone (CAS 1231575-76-0)
Recommended Standards
- 1-Cyclohexyl-1-((7,8-dimethyl-2-oxo-1,2-dihydroquinolin-3-yl)methyl)-3-phenylurea (CAS 552311-06-5)
- 1-((4-Methoxyphenyl)sulfonyl)-4-(3-(thiophen-2-yl)-1H-pyrazol-5-yl)piperidine (CAS 321848-34-4)
- (R)-7-Chlorohepta-2,3-dien-5-yn-1-ol (CAS 74660-77-8)
- 2,6-Bis(pyrrolidin-1-ylmethyl)-4-(quinazolin-4-ylamino)phenol (CAS 72063-47-9)
- 1-(4-Chlorobenzoyl)-1,2,5,6-tetrahydropyridine-3-carboxylic acid (CAS 1373246-95-7)
- 1-(3-Trifluoromethylphenyl)ethylamine (CAS 59382-36-4)
- 4-Ethyl-5-hydroxy-7-methyl-2H-chromen-2-one (CAS 62036-49-1)
- Methyl 3-methoxy-5-(4-methoxyphenyl)benzoate (CAS 1820647-87-7)
- (2S,4R)-4-(Carbamoyloxy)pyrrolidine-2-carboxylic acid (CAS 96314-74-8)
- 4-[(Morpholinothio)thioxomethyl]morpholine (CAS 13752-51-7)
- 2-Phenylpyrrolidine-2-carboxylic acid (CAS 25860-44-0)
- 4,6-Dimethyl-1H,3H-selenopheno[3,4-c]thiophene (CAS 91377-87-6)
- (<I>RS</I>)-(Methylenecyclopropyl)acetic acid (CAS 1073-00-3)
- Semaglutide impurity 26 (CAS CATO-C4X-222626)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com