5-Chloro-2-(2,3-dimethylphenyl)-4-(4-methoxyphenoxy)pyridazin-3(2H)-one CAS 478049-36-4
| CAS No. | 478049-36-4 |
| Molecular Formula | C19H17ClN2O3 |
| Molecular Weight | 356.80 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-Chloro-2-(2,3-dimethylphenyl)-4-(4-methoxyphenoxy)pyridazin-3(2H)-one (CAS 478049-36-4), molecular formula C19H17ClN2O3 and molecular weight 356.80 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-Chloro-2-(2,3-dimethylphenyl)-4-(4-methoxyphenoxy)pyridazin-3(2H)-one (C19H17ClN2O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 356.80 g/mol, it falls into the moderately-high-molecular-weight range. 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).
CATO manufactures 5-Chloro-2-(2,3-dimethylphenyl)-4-(4-methoxyphenoxy)pyridazin-3(2H)-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C19H17ClN2O3 |
| Molecular Weight | 356.80 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.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- 1-(2-Chlorobenzyl)-3-(3,4-dimethoxyphenyl)-1H-pyrazole-4-carbaldehyde (CAS 590357-02-1)
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- 2-Methyl-2-(4-nitro-1H-imidazol-1-yl)propanoic acid (CAS 1247596-39-9)
- Methyl 4-(3-(2-chloroethyl)ureido)benzoate (CAS 380324-25-4)
- n-(4-Chlorobenzyl)-2-(ethylamino)acetamide hydrochloride (CAS 1171614-62-2)
- tert-Butyl (2-((2-aminoethyl)thio)ethyl)carbamate (CAS 210767-27-4)
- 2,4-Dimethyl-6-((tetrahydrofuran-2-yl)methoxy)benzaldehyde (CAS 1710853-45-4)
- (E)-4-(4-(tert-butyl)phenoxy)-1-(dimethylamino)pent-1-en-3-one (CAS 477865-01-3)
- 4-(Methylthio)-N-(4-(methylthio)benzo[d]thiazol-2-yl)benzamide (CAS 922826-96-8)
- 2-Methyl-N-(3-nitrophenyl)prop-2-enamide (CAS 17116-66-4)
- Des-Leu14-Tirzepatide (CAS CATO-CPTD788959)
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