1,3-Dihydro-1,3,3-dimethyl-5-(1,4,5,6-tetrahydro-4-methyl-6-oxo-3-pyridazinyl)-2H-indol-2-one 100644-00-6 2H-Indol-2-one, 1,3-dihydro-1,3,3-trimethyl-5-(1,4,5,6-tetrahydro-4-methyl-6-oxo-3-pyridazinyl)- LY 186126 LY-186126