3-Allyl-2-((2-oxo-2-(3-oxo-3,4-dihydroquinoxalin-1(2H)-yl)ethyl)thio)-5-phenylthieno[2,3-d]pyrimidin-4(3H)-one CAS 556050-16-9
| CAS No. | 556050-16-9 |
| Molecular Formula | C25H20N4O3S2 |
| Molecular Weight | 488.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-Allyl-2-((2-oxo-2-(3-oxo-3,4-dihydroquinoxalin-1(2H)-yl)ethyl)thio)-5-phenylthieno[2,3-d]pyrimidin-4(3H)-one.
3-Allyl-2-((2-oxo-2-(3-oxo-3,4-dihydroquinoxalin-1(2H)-yl)ethyl)thio)-5-phenylthieno[2,3-d]pyrimidin-4(3H)-one (CAS 556050-16-9), molecular formula C25H20N4O3S2 and molecular weight 488.58 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 3-Allyl-2-((2-oxo-2-(3-oxo-3,4-dihydroquinoxalin-1(2H)-yl)ethyl)thio)-5-phenylthieno[2,3-d]pyrimidin-4(3H)-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 488.58 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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), 3-Allyl-2-((2-oxo-2-(3-oxo-3,4-dihydroquinoxalin-1(2H)-yl)ethyl)thio)-5-phenylthieno[2,3-d]pyrimidin-4(3H)-one 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 | C25H20N4O3S2 |
| Molecular Weight | 488.58 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) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 2 |
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- 2-((4-Allyl-5-(pyridin-2-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(3,5-bis(trifluoromethyl)phenyl)acetamide (CAS 618880-32-3)
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Recommended Standards
- 3-(3-Chlorophenyl)-4-((3,5-dibromo-2-hydroxybenzylidene)amino)-1H-1,2,4-triazole-5(4H)-thione (CAS 478255-34-4)
- Ethyl 3-((4-(benzo[d][1,3]dioxol-5-ylmethyl)piperazin-1-yl)sulfonyl)benzo[b]thiophene-2-carboxylate (CAS 946238-44-4)
- 3-(2-Chlorophenyl)-4-((3,5-dibromo-2-hydroxybenzylidene)amino)-1H-1,2,4-triazole-5(4H)-thione (CAS 478254-46-5)
- N-((2S,3S)-3-(3-Cyanophenyl)-4-(4-ethoxyphenyl)butan-2-yl)-2-methyl-2-((5-methylpyridin-2-yl)oxy)propanamide (CAS 945850-36-2)
- 4-((1-Ethyl-2-oxo-1,2,3,4-tetrahydroquinolin-5-yl)oxy)butanenitrile (CAS 58898-46-7)
- Ethyl 6-amino-2-naphthoate (CAS 160557-37-9)
- (5-Chloro-2-(2,5-dimethyl-1H-pyrrol-1-yl)pyridin-4-yl)boronic acid (CAS 1222522-37-3)
- 2-((3-Methyl-1,2,4-oxadiazol-5-yl)methoxy)phenol (CAS 152289-57-1)
- Furan-2-yl(4-(pyridin-2-yloxy)piperidin-1-yl)methanone (CAS 1428380-02-2)
- (R)-5,5',6,6',7,7',8,8'-Octahydro-3,3'-bis(4-nitrophenyl)-[1,1'-binaphthalene]-2,2'-diol (CAS 791616-67-6)
- (2-(Piperidin-1-ylmethyl)phenyl)(m-tolyl)methanone (CAS 898751-68-3)
- Vonoprazan Impurity 270 (CAS CATO-C4X-1020270)
- 1-Boc-4,4-difluoropyrrolidin-3-one (CAS 1215071-16-1)
- Semaglutide impurity 197 (CAS CATO-C4X-2226197)
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