Diethylcarbamazine
（重定向自Hetrazan）
Diethylcarbamazine (DEC, N, N-diethyl-4-methyl-1-piperazine carboxamide) is a synthetic derivative of piperazine used as an anthelmintic drug used in the treatment of filariasis in humans, dogs and cats. Discovery was attributed to Yellapragada Subbarow.