3-[1-(2-Chlorobenzoyl)-1H-pyrazol-3-yl]-1-(4-chlorophenyl)-1,4-dihydropyridazin-4-one CAS 318498-10-1
| CAS No. | 318498-10-1 |
| Molecular Formula | C20H12Cl2N4O2 |
| Molecular Weight | 411.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 3-[1-(2-Chlorobenzoyl)-1H-pyrazol-3-yl]-1-(4-chlorophenyl)-1,4-dihydropyridazin-4-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 411.24 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
3-[1-(2-Chlorobenzoyl)-1H-pyrazol-3-yl]-1-(4-chlorophenyl)-1,4-dihydropyridazin-4-one (CAS 318498-10-1), molecular formula C20H12Cl2N4O2 and molecular weight 411.24 g/mol, is a CATO reference standard with documented purity and traceability.
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), 3-[1-(2-Chlorobenzoyl)-1H-pyrazol-3-yl]-1-(4-chlorophenyl)-1,4-dihydropyridazin-4-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 | C20H12Cl2N4O2 |
| Molecular Weight | 411.24 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Chlorobenzoyl Standards
- 3-[1-(3-Chlorobenzoyl)piperidin-4-yl]-4-[(4-methylphenyl)methyl]-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 1775410-14-4)
- 2-({1-[1-(4-chlorobenzoyl)-1H-pyrazol-5-yl]ethyl}sulfanyl)-3-(trifluoromethyl)pyridine (CAS 1208385-08-3)
- 2-({1-[1-(2-chlorobenzoyl)-1H-pyrazol-5-yl]ethyl}sulfanyl)-3-(trifluoromethyl)pyridine (CAS 1211669-88-3)
- 1-(3-Chlorobenzoyl)-4-{[3-(3-methoxyphenyl)-1,2,4-oxadiazol-5-yl]methyl}piperidine (CAS 1775471-63-0)
- 4-(4-Chlorobenzoyl)-1-(furan-2-ylmethyl)-3-hydroxy-5-(3-hydroxyphenyl)-1H-pyrrol-2(5H)-one (CAS 618074-52-5)
- 1-Benzyl-2-[1-(4-chlorobenzoyl)-1H-pyrazol-3-yl]-1H-1,3-benzodiazole (CAS 477711-18-5)
- 6-(2-Chlorobenzoyl)-2-(3-chlorophenyl)-5-(trifluoromethyl)pyridazin-3(2H)-one (CAS 478043-63-9)
- 6-(3-Chlorobenzoyl)-2-(2-chlorophenyl)-5-(trifluoromethyl)-2,3-dihydropyridazin-3-one (CAS 478043-62-8)
Recommended Standards
- 3-Ethoxy-5-iodo-4-((4-methylbenzyl)oxy)benzamide (CAS 1023258-44-7)
- N-Methylperfluorobutanesulphonamidoethyl acrylate (CAS 67584-55-8)
- N-(7-iodo-4-methoxythiazolo[4,5-c]pyridin-2-yl)benzamide (CAS 2273883-69-3)
- 2-(4-((6-Bromo-3-nitroquinolin-4-yl)amino)phenyl)-2-methylpropanenitrile (CAS 915019-51-1)
- 5-Bromo-1,2,3,4-tetrahydroisoquinoline hydrobromide (CAS 1258856-73-3)
- 6-Bromo-3-methylisoquinolin-1-amine (CAS 872018-41-2)
- 2-(4-Ethoxyphenyl)-2H-benzo[d][1,2,3]triazol-5-amine (CAS 293737-90-3)
- 3-tert-butylpyrido[3,2-d][1,2]oxazole-5-carboxylic acid (CAS 953727-19-0)
- 4-(1,3-Thiazol-2-yl)piperidine (CAS 788822-03-7)
- methyl 4-amino-1H-pyrrole-3-carboxylate (CAS 1557510-39-0)
- 9H-Fluoren-9-yl 4-chlorobutanoate (CAS 79817-31-5)
- (4-Fluoro-benzyl)-[2-(4-methoxy-phenyl)-ethyl]-amine hydrochloride (CAS 418782-68-0)
- 4-Bromo-2-methoxy-6-[(1E)-({[3-(trifluoromethyl)phenyl]methyl}imino)methyl]phenol (CAS 478047-10-8)
- D-Lys20-Tirzepatide (CAS CATO-CPTD788914)
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