1-Methyl-5-(4-oxo-1,2,3-benzotriazin-3(4H)-yl)-1H-pyrazole-4-carboxylic acid 131073-50-2 1H-Pyrazole-4-carboxylic acid, 1-methyl-5-(4-oxo-1,2,3-benzotriazin-3(4H)-yl)- BRN 3624588