6-(4-ethoxyphenyl)-N,N,4,5,7-pentamethylpyrrolo[3,4-d]pyridazin-1-amine
6-(4-ethoxyphenyl)-N,N,4,5,7-pentamethyl-pyrrolo[3,4-d]pyridazin-1-amine
6-(4-ethoxyphenyl)-N,N,4,5,7-pentamethyl-1-pyrrolo[3,4-d]pyridazinamine
[6-(4-ethoxyphenyl)-4,5,7-trimethyl-pyrrolo[3,4-d]pyridazin-1-yl]-dimethyl-amine