2H-1,4-BENZOXAZIN-3(4H)-ONE, 4-ETHYL-6-(1-((2-PROPYNYLOXY)IMINO)ETHYL)- 4-Ethyl-6-(1-((2-propynyloxy)imino)ethyl)-2H-1,4-benzoxazin-3(4H)-one 91119-62-9 BRN 4513043