4-(2,4-Dimethoxybenzylidene)-1-phenylpyrazolidine-3,5-dione CAS 77738-07-9
| CAS No. | 77738-07-9 |
| Molecular Formula | C18H16N2O4 |
| Molecular Weight | 324.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-(2,4-Dimethoxybenzylidene)-1-phenylpyrazolidine-3,5-dione 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.
4-(2,4-Dimethoxybenzylidene)-1-phenylpyrazolidine-3,5-dione (CAS 77738-07-9) is a high-purity analytical reference standard with the molecular formula C18H16N2O4 and a molecular weight of 324.33 g/mol.
Based on its molecular formula C18H16N2O4, 4-(2,4-Dimethoxybenzylidene)-1-phenylpyrazolidine-3,5-dione contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 324.33 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C18H16N2O4 |
| Molecular Weight | 324.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Nitrogen Atoms | 2 |
Related Dimethoxybenzylidene Standards
- (E)-2-((2,4-dimethoxybenzylidene)amino)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carbonitrile (CAS 356586-75-9)
- 5-((Z)-2,3-Dimethoxybenzylidene)-3-ethyl-2-(ethylimino)thiazolidin-4-one (CAS 868142-65-8)
- N-(2,4-Dimethoxybenzylidene)-4-methylbenzenesulfonamide (CAS 314248-25-4)
- 2-(2,5-Dimethoxybenzylidene)-6-methyl-2H-thiazolo[3,2-b][1,2,4]triazine-3,7-dione (CAS 606955-36-6)
- 2-(2,5-Dimethoxybenzylidene)-1-phenylhydrazinecarbothioamide (CAS 328044-97-9)
- (E)-2-(2-(2,5-dimethoxybenzylidene)hydrazinyl)benzo[d]thiazole (CAS 305849-54-1)
- N-(3,4-Dimethoxybenzylidene)thiophene-2-sulfonamide (CAS 308293-28-9)
- 3-(2,3-Dimethoxybenzylidene)-5-(4-methoxyphenyl)furan-2(3H)-one (CAS 6621-90-5)
Recommended Standards
- 4-(2-(4-Aminophenoxy)acetamido)benzene-1-sulfonyl fluoride (CAS 21316-06-3)
- 4-(3,4-Dimethoxyphenyl)-1-phenyl-1h-pyrazole-3-carboxylic acid (CAS 956705-43-4)
- 4-((4-Benzamido-3-methylphenyl)amino)-4-oxobut-2-enoic acid (CAS 364624-22-6)
- 4-{[(5-Oxo-1-phenylpyrrolidin-3-yl)carbonyl]-amino}benzoic acid (CAS 401822-11-5)
- 2-Oxo-2H-quinolizine-3-carboxylic acid (CAS 19946-03-3)
- 3-(2-Bromophenoxy)-N-methylpropan-1-amine hydrochloride (CAS 1609402-76-7)
- 3-bromo-4-chloro-1-[(4-methoxyphenyl)methyl]pyrazolo[3,4-b]pyridine (CAS 1854056-69-1)
- 5-(Furan-2-yl)-2-methoxyphenol (CAS 1261969-65-6)
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- 1-(3-(Benzo[d]thiazol-2-yl)-4-hydroxyphenyl)-3-phenylurea (CAS 202190-80-5)
- 3-Iodo-5-methyl-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole (CAS 2057508-88-8)
- [Glu]17-Semaglutide (CAS CATO-CPTD788604)
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