5,6-Dichloropyridazin-4-ol CAS 111232-47-4
| CAS No. | 111232-47-4 |
| Molecular Formula | C4H2Cl2N2O |
| Molecular Weight | 164.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5,6-Dichloropyridazin-4-ol (CAS 111232-47-4) is a high-purity analytical reference standard with the molecular formula C4H2Cl2N2O and a molecular weight of 164.98 g/mol.
5,6-Dichloropyridazin-4-ol (C4H2Cl2N2O) contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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), 5,6-Dichloropyridazin-4-ol 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 | C4H2Cl2N2O |
| Molecular Weight | 164.98 g/mol |
| Appearance | Off-white to pale 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichloropyridazin Standards
- 5,6-Dichloropyridazin-3(2H)-one (CAS 17285-36-8)
- 4,6-Dichloropyridazin-3(2H)-one (CAS 17285-37-9)
- 3,6-Dichloropyridazin-4(1H)-one (CAS 53337-81-8)
- 3,6-Dichloropyridazin-4-o (CAS 2779-81-9)
- 5,6-Dichloropyridazin-4-ol (CAS 55609-72-8)
- 4,6-dichloropyridazin-3-amine (CAS 1161847-28-4)
- 4,5-dichloropyridazin-3-amine (CAS 1351000-23-1)
- 5,6-dichloropyridazin-4-amine (CAS 89180-50-7)
Recommended Standards
- Methoxyflurane (CAS 76-38-0)
- 3,5-Dichloro-2(1H)-pyrazinone (CAS 130879-62-8)
- 5-Chlorofuran-2-carbonyl chloride (CAS 24078-79-3)
- 2,4-Dichloropyrimidin-5-ol (CAS 1395037-19-0)
- Ferric maltol (CAS 33725-54-1)
- 2-[[(Aminocarbonyl)oxy]methyl]-2-methylpentyl ethyl ester carbonic acid (CAS 76693-55-5)
- Diethyl 1-amino-1H-pyrrole-2,4-dicarboxylate (CAS 869066-99-9)
- 1-(Cyclohexylamino)-3-((2-methyl-1H-indol-4-yl)oxy)propan-2-ol (CAS 338392-09-9)
- 1-(4-Methylpyridin-2-yl)-1,4-diazepane (CAS 1249958-77-7)
- 2-Bromo-4-(tert-butyl)-1-iodobenzene (CAS 860435-39-8)
- 1-{8-hydroxy-4,10-dioxatricyclo[7.3.0.0³,⁷]dodeca-1,3(7),5,8,11-pentaen-2-yl}ethan-1-one (CAS 1895423-74-1)
- 2-(5-Chloroquinolin-8-yl)acetonitrile (CAS 1306606-40-5)
- 2,7-Di(pyridin-4-yl)-9H-carbazole (CAS 2768518-72-3)
- Semaglutide Impurity 161 (x TFA Salt) (CAS CATO-C4X-2226161)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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