4-[3-(4-Ethoxyphenyl)-1,2,4-oxadiazol-5-yl]-2-phenyl-1,2-dihydrophthalazin-1-one CAS 1291838-18-0
| CAS No. | 1291838-18-0 |
| Molecular Formula | C24H18N4O3 |
| Molecular Weight | 410.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 410.42 g/mol gives 4-[3-(4-Ethoxyphenyl)-1,2,4-oxadiazol-5-yl]-2-phenyl-1,2-dihydrophthalazin-1-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 4-[3-(4-Ethoxyphenyl)-1,2,4-oxadiazol-5-yl]-2-phenyl-1,2-dihydrophthalazin-1-one (CAS 1291838-18-0), a certified reference material (molecular formula C24H18N4O3, MW 410.42 g/mol) for analytical method development and quality control.
Structurally, 4-[3-(4-Ethoxyphenyl)-1,2,4-oxadiazol-5-yl]-2-phenyl-1,2-dihydrophthalazin-1-one (C24H18N4O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 18.0, corresponding to approximately 18 ring(s) or double-bond equivalent(s). With a molecular weight of 410.42 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-[3-(4-Ethoxyphenyl)-1,2,4-oxadiazol-5-yl]-2-phenyl-1,2-dihydrophthalazin-1-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 | C24H18N4O3 |
| Molecular Weight | 410.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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.) | 1990 |
| Nitrogen Atoms | 4 |
Related Ethoxyphenyl Standards
- 2-[(5-{1-[(4-Ethoxyphenyl)amino]ethyl}-4-phenyl-4H-1,2,4-triazol-3-yl)thio]acetohydrazide (CAS 1306739-36-5)
- N1-(2-Ethoxyphenyl)-N1-(2-(octyloxy)phenyl)oxalamide (CAS 105994-89-6)
- 4-(((4-(4-Ethoxyphenyl)-5-(pyridin-3-yl)-4H-1,2,4-triazol-3-yl)thio)methyl)benzonitrile (CAS 571942-55-7)
- N-(2-Ethoxyphenyl)-2-(3-morpholino-4-phenyl-1H-pyrazol-1-yl)acetamide (CAS 1286713-00-5)
- 3-(4-(4-Ethoxyphenyl)-5-((2-fluorobenzyl)thio)-4H-1,2,4-triazol-3-yl)pyridine (CAS 477329-53-6)
- 3-(4-(4-Ethoxyphenyl)-5-((3-fluorobenzyl)thio)-4H-1,2,4-triazol-3-yl)pyridine (CAS 477331-03-6)
- 3-(4-(4-Ethoxyphenyl)-5-((4-fluorobenzyl)thio)-4H-1,2,4-triazol-3-yl)pyridine (CAS 477329-85-4)
- N-(4-ethoxyphenyl)-N-(4-methoxybenzyl)-3-nitrobenzamide (CAS 332163-58-3)
Recommended Standards
- ((3AS,4R,6S,7R,7aS)-7-acetoxy-6-(4-methoxyphenoxy)-2,2-dimethyltetrahydro-4H-[1,3]dioxolo[4,5-c]pyran-4-yl)methyl acetate (CAS 1201011-97-3)
- Methyl (2S)-2-{[(benzyloxy)carbonyl]amino}-5-(1,3-dioxoisoindol-2-yl)pentanoate (CAS 142165-70-6)
- Ethyl 2-cyano-3-(3-methoxy-4-(2-((4-methoxyphenyl)amino)-2-oxoethoxy)phenyl)acrylate (CAS 1164483-19-5)
- (E)-Ceftibuten Dihydrate (CAS 1428117-81-0)
- 4-Cyclohexyl-5-(furan-2-yl)-4h-1,2,4-triazole-3-thiol (CAS 259154-01-3)
- 5-Bromo-3-phenylpyrazin-2-amine (CAS 344940-70-1)
- 2-(3-Bromophenyl)-N-(piperidin-4-yl)acetamide hydrochloride (CAS 1838897-78-1)
- 6-Amino-1-(4-chlorophenyl)-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carbaldehyde (CAS 900463-59-4)
- 3-Chloro-2-(2-methyl-4-(1H-pyrazol-5-yl)-1H-imidazol-1-yl)-5-(trifluoromethyl)pyridine (CAS 303150-53-0)
- Piperidine-4-boronic acid pinacol ester hydrochloride (CAS 1218790-99-8)
- 4-Amino-2-chloronicotinaldehyde 2,2,2-trifluoroacetate (CAS 1032350-07-4)
- 2-(2,5-Dichlorophenyl)acetic acid (CAS 5398-79-8)
- N-Methyl-1-(quinoxalin-5-yl)methanamine (CAS 933751-81-6)
- Prolactin-Releasing Peptide (12-31) (human) (CAS 235433-36-0)
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