1-Ethoxycarbonyl-2,2-bis(2-chloroethyl)hydrazine 3,3-Bis(2-chloroethyl)carbazic acid ethyl ester 77944-95-7 BRN 1868273 CARBAZIC ACID, 3,3-BIS(2-CHLOROETHYL)-, ETHYL ESTER Ethyl 3,3-bis(2-chloroethyl)carbazate N(sup 2),N(sup 2)-Bis(2-chloraethyl)-carbaethoxyhydrazid [German]