3-Bromo-6-chloro-4-methylpyridazine CAS 89283-90-9
| CAS No. | 89283-90-9 |
| Molecular Formula | C5H4BrClN2 |
| Molecular Weight | 207.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-Bromo-6-chloro-4-methylpyridazine.
3-Bromo-6-chloro-4-methylpyridazine (CAS 89283-90-9), molecular formula C5H4BrClN2 and molecular weight 207.46 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3-Bromo-6-chloro-4-methylpyridazine (C5H4BrClN2) is characterized by a nitrile group, chlorine/bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C5H4BrClN2 |
| Molecular Weight | 207.46 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.) | 1982 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 6-Bromo-5-chloropyridin-2-amine (CAS 1004294-58-9)
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- 2-Bromo-5-chloropyridin-4-amine (CAS 1060815-72-6)
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- 4-Bromo-2-chloro-6-methylpyrimidine (CAS 1137576-45-4)
- 4-Bromo-6-chloropyridin-2-amine (CAS 1206250-19-2)
- 2-Bromo-5-chloro-3-methylpyrazine (CAS 1260664-82-1)
Recommended Standards
- 3-Bromo-5-chloro-1-vinyl-1H-pyrazole (CAS 923036-01-5)
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- 3-Amino-5-bromo-4-chloropyridine (CAS 89283-92-1)
- 4-Amino-3-bromo-2-chloropyridine (CAS 215364-85-5)
- (S)-Tetrahydro-2H-pyran-2-carboxylic Acid (CAS 105499-32-9)
- 3-phenyl-9H-carbazole (CAS 103012-26-6)
- Ethyl 5-chlorooxazole-4-carboxylate (CAS 1823403-24-2)
- 4-Bromo-1-fluoro-2-naphthaldehyde (CAS 842136-64-5)
- 3-((2,4-Dimethoxyphenyl)amino)-1-(p-tolyl)propan-1-one (CAS 477319-04-3)
- 3-(4-Chloro-3-nitrophenyl)-5-(pyridin-2-yl)-1,2,4-oxadiazole (CAS 879568-39-5)
- 1-(Tert-butyl)-6-methyl-4-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridine-3-carboxamide (CAS 1186404-79-4)
- 5-(Methylamino)pentanoic acid hydrochloride (CAS 81893-78-9)
- 2-Benzyl-2H-spiro[benzo[d]isothiazole-3,3'-pyrrolidine] 1,1-dioxide (CAS 1422137-41-4)
- Cholecystokinin Octapeptide (1-3) (desulfated) H-Asp-Tyr-Met-OH (CAS 121880-94-2)
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