4,4-Diethyl-1-(1-(2-pyridyl)ethylidene)-3-thiosemicarbazide 71592-42-2 BRN 1467599 KETONE, METHYL 2-PYRIDYL, 4,4-DIETHYL-3-THIOSEMICARBAZONE Semicarbazide, 4,4-diethyl-1-(1-(2-pyridyl)ethylidene)-3-thio-