Mass spectra of some pyrazolemd isothiazole

ABSTRACT

The mass spectra of di-[5-methyl-3-oxopyrazol-4-yl] methane [I], di-[1-phenyl-3-methyl-5-oxopyrazol-4-yl] methane [II], 4-amino-3, 5-di-[benzylidene-hydrazinocarbonyl] isothiazole [III], 4-amino-di-[m- bromobenzylidenehydrazinocarbonyl] isothiazole [IV], 3-[p- chlorobenzylidenehydrazinocarbonyl] isothiazolo [4, 3-d] pyrimidine-7 [6H]-one [V] and 5-hydroxy-3-[p-methoxybenzylidenehydrazinocarbonyl] isothiazolo-[4, 3-d] pyrimidine-7 [6H]-one [VI] have been thoroughly investigated