Pyridazine derivatives

Pyridazine derivatives contain a six-membered aromatic 1,2-diazine ring with adjacent nitrogen atoms. This distinguishes them from pyrazine (1,4-diazine) and pyrimidine (1,3-diazine) derivatives. Substitution or ring fusion creates distinct compounds, so identity depends on the ring system and substitution pattern.

Published research uses pyridazine cores as heterocyclic building blocks and studies their functionalisation in synthetic and medicinal chemistry. These class-level contexts do not establish common activity or end use. Compare the full name, structure, CAS number where available, molecular formula, and substituent positions. For an unlisted analogue, send an exact structure or identifier with your custom-synthesis enquiry.

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5-Bromo-6-chloropyridazin-3-amine

5-Bromo-6-chloropyridazin-3-amine

2755763-60-9C4H3BrClN3

5-Bromo-6-chloropyridazin-3-amine, CAS 2755763-60-9, has molecular formula C4H3BrClN3, molecular weight 208.44 and PubChem CID 139530875.

3,6-Dimethylpyridazin-4-ol hydrochloride

3,6-Dimethylpyridazin-4-ol hydrochloride

2243507-80-2C6H9ClN2O

3,6-Dimethylpyridazin-4-ol hydrochloride (CAS 2243507-80-2) chemical product supplied by Rlavie for research and synthesis applications.

4-Iodopyridazine

4-Iodopyridazine

950890-11-6C4H3IN2

4-Iodopyridazine (CAS 950890-11-6) chemical product supplied by Rlavie for research and synthesis applications.