4-Bromo-6-chloropyridazin-3(2H)-one CAS 933041-13-5
| CAS No. | 933041-13-5 |
| Molecular Formula | C4H2BrClN2O |
| Molecular Weight | 209.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Bromo-6-chloropyridazin-3(2H)-one (C4H2BrClN2O) contains an amide group, a hydroxyl group, an ether linkage, chlorine/bromine 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).
CATO supplies 4-Bromo-6-chloropyridazin-3(2H)-one (CAS 933041-13-5), a certified reference material (molecular formula C4H2BrClN2O, MW 209.43 g/mol) for analytical method development and quality control.
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-Bromo-6-chloropyridazin-3(2H)-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 | C4H2BrClN2O |
| Molecular Weight | 209.43 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.) | 1987 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
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- 4-Bromo-5-chloro-2,3-dihydropyridazin-3-one (CAS 119729-96-3)
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Recommended Standards
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- Palbociclib Impurity 118 (CAS 844843-37-4)
- 3-Amino-N-(4-chlorophenyl)-6-ethyl-5H,6H,7H,8H-thieno[2,3-b]quinoline-2-carboxamide (CAS 625370-24-3)
- N-(2-amino-5-chloro-4-methoxyphenyl)acetamide (CAS 857553-74-3)
- 2-(4-Methyl-1,4-diazepan-1-yl)pyridin-3-amine (CAS 1042521-81-2)
- Methyl 3-fluoro-2-methylbenzoate (CAS 230301-81-2)
- 2-(3,5-Dimethyl-1H-pyrazol-4-yl)-N-methylacetamide (CAS 152966-37-5)
- (S)-1-(Pyridin-3-ylmethyl)pyrrolidin-3-amine (CAS 256526-96-2)
- 3-Cyclobutyl-1-isopropyl-1H-pyrazol-5-amine (CAS 1707563-60-7)
- Esomeprazole impurity 127 (CAS 16282-23-8)
- N-(3-Chloro-4-hydroxyphenyl)methanesulfonamide (CAS 321962-11-2)
- Custom peptides (CAS CATO-CPTD788509)
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