1,2,4-Triazin-5(4H)one, 4-amino-6-(1,1-dimethylethyl)-3-(ethylthio)- 4-Amino-6-(1,1-dimethylethyl)-3-(ethylthio)-1,2,4-triazin-5(4H)-one 64529-56-2 88529-03-7 BAY dic 1559 BAY smy 1500 BRN 5023567 Ethiozin Ethyl metribuzin Lektan SMY 1500 Tycor