4-Pyridinecarbothioamide, 2-propyl-, mixt. with 4-pyridinecarboxylic acid hydrazide and4,4'-sulfonylbis(benzenamine) 4-Pyridinecarboxylic acid hydrazide mixture with 2-propyl-4-pyridinecarbothioamide and 4,4'-sulfonylbis(benzenamine) 55015-10-6 Diaminodiphenyl sulfone isoniazid-prothionamide mixture Isoprodian L73A