Synonyms: 1-Piperazinecarboxylicacid, 4-(6-chloropyrazinyl)-, 1,1-dimethylethyl ester (9CI);4-(6-Chloropyrazin-2-yl)piperazine-1-carboxylic acid tert-butylester; 6'-Chloro-2,3,5,6-tetrahydro-[1,2']bipyrazinyl-4-carboxylic acid tert-butyl ester; tert-Butyl4-(6-chloro-2-pyrazinyl)-1-piperazinecarboxylate