3-Ethyl-2-((2-(6-methyl-2,3-dihydro-4H-benzo[b][1,4]oxazin-4-yl)-2-oxoethyl)thio)-7-phenylthieno[3,2-d]pyrimidin-4(3H)-one CAS 1040661-80-0
| CAS No. | 1040661-80-0 |
| Molecular Formula | C25H23N3O3S2 |
| Molecular Weight | 477.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 3-Ethyl-2-((2-(6-methyl-2,3-dihydro-4H-benzo[b][1,4]oxazin-4-yl)-2-oxoethyl)thio)-7-phenylthieno[3,2-d]pyrimidin-4(3H)-one 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.
3-Ethyl-2-((2-(6-methyl-2,3-dihydro-4H-benzo[b][1,4]oxazin-4-yl)-2-oxoethyl)thio)-7-phenylthieno[3,2-d]pyrimidin-4(3H)-one (CAS 1040661-80-0) is a high-purity analytical reference standard with the molecular formula C25H23N3O3S2 and a molecular weight of 477.60 g/mol.
3-Ethyl-2-((2-(6-methyl-2,3-dihydro-4H-benzo[b][1,4]oxazin-4-yl)-2-oxoethyl)thio)-7-phenylthieno[3,2-d]pyrimidin-4(3H)-one (C25H23N3O3S2) 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. 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.
Physical & Chemical Properties
| Molecular Formula | C25H23N3O3S2 |
| Molecular Weight | 477.60 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.) | 1988 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
Recommended Standards
- N-(4-acetylphenyl)-2-((3-ethyl-4-oxo-7-(p-tolyl)-3,4-dihydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide (CAS 1040651-16-8)
- 3-Methyl-2-{[2-(6-methyl-3,4-dihydro-2H-1,4-benzoxazin-4-yl)-2-oxoethyl]sulfanyl}-7-(4-methylphenyl)-3H,4H-thieno[3,2-d]pyrimidin-4-one (CAS 1105196-93-7)
- THP-PEG4-Pyrrolidine(N-Boc)-CH2OH (CAS 2378261-80-2)
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- 2-Bromo-6-(pyrrolidin-1-ylmethyl)pyridine (CAS 1113040-40-6)
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- N-Benzyl-N-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-amine (CAS 1073354-30-9)
- N-(4-fluorophenyl)-4-nitro-1H-pyrazol-5-amine (CAS 400079-94-9)
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- Semaglutide Impurity 165 (CAS CATO-C4X-2226165)
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