1105192-73-1

1(6H)-Pyridazineacetic acid, 6-oxo-3-(4-pyridinyl)- (6-Oxo-3-pyridin-4-ylpyridazin-1(6{H})-yl)acetic acid 2-(6-Oxo-3-(pyridin-4-yl)pyridazin-1(6H)-yl)acetic acid 2-[6-oxo-3-(pyridin-4-yl)-1,6-dihydropyridazin-1-yl]acetic acid