102999-49-5 3-Amino-5-tert-butyl-6-chloropyridazine 3-Amino-6-chloro-5-tert-butylpyridazine 3-Pyridazinamine, 6-chloro-5-(1,1-dimethylethyl)- 6-Chloro-5-(1,1-dimethylethyl)-3-pyridazinamine