16960-39-7 AI3-27411 Acetaldehyde, methylthio-, O-(carbamoyl)oxime BRN 2960550 Du Pont 1642 Dupont insecticide 1642 EI-1642 ENT-27,411 Ethanimidothioic acid, N-((aminocarbonyl)oxy)-, methyl ester Methyl N-(carbamoyloxy)thioacetimidate NSC 191001