benzenesulfonic acid, 3-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)-4-methyl-
CAS No. 5466-86-4
benzenesulfonic acid, 3-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)-4-methyl-