4-[3-(3-Bromophenyl)-1,2,4-oxadiazol-5-yl]-2-(3-methylphenyl)-1,2-dihydrophthalazin-1-one CAS 1291859-36-3
| CAS No. | 1291859-36-3 |
| Molecular Formula | C23H15BrN4O2 |
| Molecular Weight | 459.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-[3-(3-Bromophenyl)-1,2,4-oxadiazol-5-yl]-2-(3-methylphenyl)-1,2-dihydrophthalazin-1-one is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-[3-(3-Bromophenyl)-1,2,4-oxadiazol-5-yl]-2-(3-methylphenyl)-1,2-dihydrophthalazin-1-one (CAS 1291859-36-3) is a high-purity analytical reference standard with the molecular formula C23H15BrN4O2 and a molecular weight of 459.29 g/mol.
The molecular framework of 4-[3-(3-Bromophenyl)-1,2,4-oxadiazol-5-yl]-2-(3-methylphenyl)-1,2-dihydrophthalazin-1-one (C23H15BrN4O2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C23H15BrN4O2 |
| Molecular Weight | 459.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 4 |
Related Bromophenyl Standards
- 4-[3-(4-Bromophenyl)-1,2,4-oxadiazol-5-yl]-2-(4-methylphenyl)-1,2-dihydrophthalazin-1-one (CAS 1291840-25-9)
- 4-Bromophenyl benzoate (CAS 1523-17-7)
- 2-(2-Bromophenyl)-5-(((1-(2-ethoxyphenyl)-1H-tetrazol-5-yl)thio)methyl)-1,3,4-oxadiazole (CAS 849012-74-4)
- 5-{[(4-bromophenyl)methyl]sulfanyl}-2-ethyl-8,9-dimethoxy-[1,2,4]triazolo[1,5-c]quinazoline (CAS 1221715-21-4)
- 9-(4-Bromophenyl)-10-(1-naphthyl)anthracene (CAS 1160506-32-0)
- 9-(3-Bromophenyl)-10-(naphthalen-1-yl)anthracene (CAS 1228267-67-1)
- 9-(3-Bromophenyl)-10-(naphthalen-2-yl)anthracene (CAS 943861-20-9)
- 9-(4-Bromophenyl)-10-(2-naphthyl)anthracene (CAS 936854-62-5)
Recommended Standards
- 5-(1-(3,4-Dimethoxy-5-(methylselanyl)phenyl)vinyl)-2-methoxyphenyl dihydrogen phosphate (CAS 2123478-22-6)
- tert-butyl N-tert-butoxycarbonyl-N-(3-iodoimidazo[1,2-a]pyridin-8-yl)carbamate (CAS 2456364-43-3)
- 6-Amino-4-(5-bromo-2-hydroxyphenyl)-3-(naphthalen-1-yl)-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile (CAS 882750-21-2)
- tert-Butyl 5-((tert-butoxycarbonyl)amino)-2-iodo-1H-pyrrolo[3,2-b]pyridine-1-carboxylate (CAS 2891457-60-4)
- 7,8-Dimethyl-2-(5-methylfuran-2-yl)quinoline-4-carboxylic acid (CAS 725687-85-4)
- 4-(2-(Methylsulfonyl)ethyl)piperidine (CAS 718610-58-3)
- 4-(Benzo[d]thiazol-2-yl)-N-(6-methylbenzo[d]thiazol-2-yl)butanamide (CAS 793731-79-0)
- (1S)-3-(1,10-Phenanthrolin-2-yl)-2'-phenyl-[1,1'-binaphthalen]-2-ol (CAS 1621903-81-8)
- 4,6-Diaminopyridine-3-carbonitrile (CAS 75776-47-5)
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- 2,2-Dimethyl-5-(1h-pyrazol-1-yl)pentan-1-amine (CAS 1497151-93-5)
- 2,2'-(2,2-Dimethyl-1,3-dioxolane-4,5-diyl)bis(propan-2-ol) (CAS 489433-67-2)
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- Peptide Impurity 11 X TFA Salt (CAS CATO-CPTD788811)
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