4,5-dichloro-2-(3,4-dichlorophenyl)-2,3-dihydropyridazin-3-one CAS 33098-12-3
| CAS No. | 33098-12-3 |
| Molecular Formula | C10H4Cl4N2O |
| Molecular Weight | 309.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,5-dichloro-2-(3,4-dichlorophenyl)-2,3-dihydropyridazin-3-one (CAS 33098-12-3), molecular formula C10H4Cl4N2O and molecular weight 309.96 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4,5-dichloro-2-(3,4-dichlorophenyl)-2,3-dihydropyridazin-3-one (C10H4Cl4N2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 309.96 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), 4,5-dichloro-2-(3,4-dichlorophenyl)-2,3-dihydropyridazin-3-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 | C10H4Cl4N2O |
| Molecular Weight | 309.96 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related dichloro Standards
- 4,5-Dichloro-2-(2,4-dichlorophenyl)-2,3-dihydropyridazin-3-one (CAS 24725-65-3)
- 4,5-Dichloro-2-(3,5-dichlorophenyl)pyridazin-3(2H)-one (CAS 86483-43-4)
- Dichloro(1,10-phenanthroline-κN1,κN10)cobalt (CAS 48165-46-4)
- 3,4-Dichloro-1-(3-(trifluoromethyl)phenyl)-1H-pyrrole-2,5-dione (CAS 39147-10-9)
- 4,5-Dichloro-2-(5-(trifluoromethyl)pyridin-2-yl)pyridazin-3(2H)-one (CAS 89570-57-0)
- 6,8-Dichloro-2-(4-fluorophenyl)-4H-benzo[d][1,3]oxazin-4-one (CAS 40728-56-1)
- (T-4)-Dichloro(1,10-phenanthroline-κN1,κN10)nickel (CAS 22980-76-3)
- 3-(2,4-Dichloro-5-fluorophenyl)-1H-pyrazole-4-sulfonamide (CAS 1292620-27-9)
Recommended Standards
- 1,3-Dibromo-4H-cyclopenta[c]thiophene-4,6(5H)-dione (CAS 246232-37-1)
- 5,6-Dibromothieno[2,3-d]pyrimidin-4(3H)-one (CAS 1239460-82-2)
- (2,5-Dibutoxy-1,4-phenylene)diboronic acid (CAS 373502-83-1)
- 1,3-Dibromo-5-(2-methoxyethoxy)benzene (CAS 1160184-89-3)
- 4,7-Dibromo-[1,2,5]thiadiazolo[3,4-c]pyridine (CAS 333432-27-2)
- 1-(4-Piperidinylmethyl)piperidine dihydrochloride (CAS 32832-17-0)
- 3-Oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-8-carbohydrazide (CAS 2168265-00-5)
- 1-Phenylanthracene (CAS 1714-09-6)
- 3-(2-Hydroxy-4,6-dimethylquinolin-3-yl)propanoic acid (CAS 36796-92-6)
- 11-Cyano-N-(4-nitrophenyl)-9,10-dihydro-9,10-ethanoanthracene-11-carboxamide (CAS 312505-69-4)
- 2-(chloromethyl)-3H,4H-thieno[2,3-d]pyrimidin-4-one (CAS 1039847-82-9)
- 4-(5,5-Dimethyl-1,3-dioxan-2-yl)-4-ethylbutyrophenone (CAS 898787-21-8)
- 1-[3-(Trifluoromethyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]piperazine (CAS 338748-56-4)
- Tau Peptide (301-315) trifluoroacetate salt (CAS 330456-48-9)
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