1-Benzyl-5-butyl-3-chloro-6-phenoxypyridazin-4(1H)-one CAS 919197-99-2
| CAS No. | 919197-99-2 |
| Molecular Formula | C21H21ClN2O2 |
| Molecular Weight | 368.86 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 1-Benzyl-5-butyl-3-chloro-6-phenoxypyridazin-4(1H)-one (CAS 919197-99-2), a certified reference material (molecular formula C21H21ClN2O2, MW 368.86 g/mol) for analytical method development and quality control.
1-Benzyl-5-butyl-3-chloro-6-phenoxypyridazin-4(1H)-one (C21H21ClN2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C21H21ClN2O2 |
| Molecular Weight | 368.86 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Recommended Standards
- 1-(4-Butylphenyl)-5-(4-chlorophenyl)-3-methyl-1H-pyrazole-4-carboxylic acid (CAS 956786-73-5)
- 2-((4-(2-Chlorophenyl)piperazin-1-yl)methyl)-5-(p-tolyl)-1,3,4-oxadiazole (CAS 902253-02-5)
- 1-(4-(Sec-butyl)phenyl)-5-(4-chlorophenyl)-3-methyl-1H-pyrazole-4-carboxylic acid (CAS 956786-71-3)
- 2-(4-((5-Chloro-1-methyl-3-phenyl-1H-pyrazol-4-yl)methyl)piperazin-1-yl)pyrimidine (CAS 477714-01-5)
- 3-(3,3-Difluoroazetidin-1-yl)-2-nitropyridine (CAS 1779124-76-3)
- 6,8-Dichloro-4-phenylquinazolin-2(1H)-one (CAS 23441-84-1)
- 4-(octyloxy)phenyl 4-(pentyloxy)benzoate 4-n-Octyloxyphenyl 4-n-pentyloxybenzoate 50649-44-0 (CAS 50649-44-0)
- 4-Chloro-2,6-dimethyl-5-(trifluoromethyl)pyrimidine (CAS 2417423-28-8)
- 3-phenoxycarbonylcyclobutanecarboxylic acid (CAS 2167573-81-9)
- 3-Phenyl-4,5,6,7-tetrahydro-1H-pyrazolo[4,3-c]pyridine (CAS 87642-29-3)
- 1-(1-(Aminomethyl)-3-methylcyclopentyl)propan-1-ol (CAS 1559844-46-0)
- 5-Fluoro-3,4-dihydroquinoxalin-2(1H)-one (CAS 148010-69-9)
- 1,2-Dichloro-3-iodobenzene (CAS 2401-21-0)
- D-[Thr]5-Semaglutide (CAS CATO-C4X-2226245)
Why CATO?
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