4,5-Dichloro-2-(4-chlorophenyl)pyridazin-3-one
Product Specifications
- CAS
- 33098-11-2
- MF
- C10H5Cl3N2O
- Appearance
- brown or yellow solid
- Synonym(s)
- 3(2H)-Pyridazinone, 4,5-dichloro-2-(4-chlorophenyl)-
- Shipping
- ambient temperature
- Storage
- 2-8°C
CAS 33098-11-2 corresponds to 4,5-Dichloro-2-(4-chlorophenyl)pyridazin-3-one, formula C10H5Cl3N2O. PubChem assigns CID 779402, SMILES C1=CC(=CC=C1N2C(=O)C(=C(C=N2)Cl)Cl)Cl, and InChIKey NSDMHMDFFLRTAE-UHFFFAOYSA-N. PubChem lists this IUPAC wording as a synonym of its 3(2H)-pyridazinone Title, with an identical standardized structure.
The pyridazinone ring contains adjacent nitrogens and a carbonyl at position 3. Chlorine atoms occupy positions 4 and 5 of that ring. Position 2 bears a phenyl group whose own chlorine is para to the pyridazinone attachment, accounting for the third chlorine in C10H5Cl3N2O. The graph contains one molecular component and no separate salt. It also contains no encoded stereochemistry. The phenyl ring adds no other heteroatom or disconnected fragment here. Both ring locants and the phenyl locant matter because rearranging any chlorine creates a different connectivity even when the elemental formula remains unchanged.
An inquiry should cite CAS 33098-11-2 or CID 779402 and retain every locant in the preferred name. State the requested quantity, a reply contact, and any identity-record questions. InChIKey NSDMHMDFFLRTAE-UHFFFAOYSA-N gives a compact comparison point for the exact three-chlorine graph. Rlavie can align the message with this catalog entry through those identifiers. The 3(2H)-pyridazinone synonym may be noted as a cross-reference, but it does not change the substance represented here.