Ethyl 7-methyl-2-(4-nitrobenzylidene)-5-(3-nitrophenyl)-3-oxo-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate CAS 300377-52-0
| CAS No. | 300377-52-0 |
| Molecular Formula | C23H18N4O7S |
| Molecular Weight | 494.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 494.48 g/mol gives Ethyl 7-methyl-2-(4-nitrobenzylidene)-5-(3-nitrophenyl)-3-oxo-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Ethyl 7-methyl-2-(4-nitrobenzylidene)-5-(3-nitrophenyl)-3-oxo-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate (CAS 300377-52-0), molecular formula C23H18N4O7S and molecular weight 494.48 g/mol, is a CATO reference standard with documented purity and traceability.
Ethyl 7-methyl-2-(4-nitrobenzylidene)-5-(3-nitrophenyl)-3-oxo-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate (C23H18N4O7S) contains a flavonoid 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).
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), Ethyl 7-methyl-2-(4-nitrobenzylidene)-5-(3-nitrophenyl)-3-oxo-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate 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 | C23H18N4O7S |
| Molecular Weight | 494.48 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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Recommended Standards
- 8-(Acetyl(4'-Fluoro(1,1'-Biphenyl)-4-ylAmino)-2'-Deoxy-Guanosine (CAS 67764-18-5)
- Tolvaptan Impurity 48 (CAS CATO-C4X-195548)
- Ethyl 3-(1,3-dioxo-2,3-dihydro-1H-inden-2-ylidene)-5-[2-(methoxycarbonyl)thiophen-3-yl]-4,6-dioxo-octahydropyrrolo[3,4-c]pyrrole-1-carboxylate (CAS 321522-15-0)
- Elobixibat Impurity 32 (CAS CATO-C4X-283832)
- 3-(2-Hydroxypyrimidin-5-yl)benzonitrile (CAS 1261901-72-7)
- N-(3-Chlorophenyl)-2-[(4-{[4-({[(3-chlorophenyl)carbamoyl]methyl}sulfanyl)phenyl]sulfanyl}phenyl)sulfanyl]acetamide (CAS 882079-16-5)
- 4-Bromo-2-((tetrahydro-2H-pyran-4-yl)oxy)pyridine (CAS 1036761-99-5)
- 2-(3-Chloropropyl)-2-(4-fluorophenyl)-1,3-dioxane (CAS 4497-36-3)
- (3-Trifluoromethyl-Pyrrolidin-3-Yl)-Methanol Hydrochloride (CAS 1260812-78-9)
- Methyl 2-(3-nitrobenzyl)butanoate (CAS 138711-89-4)
- (S)-1-((1-methyl-3-oxocyclohexyl)methyl)-1H-benzo[d]imidazole-6-carbonitrile (CAS 1416324-31-6)
- 1-(Benzo[d][1,3]dioxol-5-yl)-1-cyclopropylethan-1-ol (CAS 1202774-81-9)
- Br-PEG4-THP (CAS 1803547-60-5)
- Semaglutide impurity 85 (CAS CATO-C4X-222685)
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