6-(3,4-Dichlorophenyl)pyridazin-3(2H)-one CAS 55901-92-3
| CAS No. | 55901-92-3 |
| Molecular Formula | C10H6Cl2N2O |
| Molecular Weight | 241.07 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.
6-(3,4-Dichlorophenyl)pyridazin-3(2H)-one (CAS 55901-92-3) is a high-purity analytical reference standard with the molecular formula C10H6Cl2N2O and a molecular weight of 241.07 g/mol.
Structurally, 6-(3,4-Dichlorophenyl)pyridazin-3(2H)-one (C10H6Cl2N2O) 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 241.07 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C10H6Cl2N2O |
| Molecular Weight | 241.07 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, keep tightly closed to prevent evaporation |
| 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.) | 1972 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichlorophenyl Standards
- 3-(2,4-Dichlorophenyl)-1H-pyrazole-4-carbaldehyde (CAS 1031794-72-5)
- 5-(2,4-Dichlorophenyl)pyrimidin-2-ol (CAS 103824-18-6)
- 5-(2,3-Dichlorophenyl)-2-furaldehyde (CAS 106827-26-3)
- 5-(3,5-Dichlorophenyl)furan-2-carbaldehyde (CAS 106827-27-4)
- 5-(2,5-Dichlorophenyl)pyrimidin-2-ol (CAS 1111103-83-3)
- 5-(2,3-Dichlorophenyl)pyrimidin-2-ol (CAS 1111108-08-7)
- 5-(3,4-Dichlorophenyl)pyrimidin-2-ol (CAS 1111108-09-8)
- 5-(3,5-Dichlorophenyl)pyrimidin-2-ol (CAS 1111113-76-8)
Recommended Standards
- 6-(2,4-Dichlorophenyl)pyridazin-3-ol (CAS 58897-72-6)
- 7-bromo-4,5-difluoro-1-benzofuran (CAS 286836-09-7)
- 5-Chloro-6-(4-chlorophenyl)pyridazin-3-ol (CAS 80591-41-9)
- N-(2,2-dichloro-1-cyanovinyl)benzamide (CAS 49837-70-9)
- (<I>R</I><SUB>P</SUB>)-1-[(<I>R</I>)-α-(dimethylamino)-2-(diphenylphosphine) Benzyl]-2-diphenylphosphine ferrocene (CAS 1003012-96-1)
- 3-(Benzylthio)-1,2,4-triazin-5(4H)-one (CAS 90946-15-9)
- Propyl[(thiophen-2-yl)methyl]amine hydrochloride (CAS 87869-73-6)
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- Thoron (CAS 53669-45-7)
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