ortho-methylbenzoic acid
tert-butyl 4-(4-nitrophenyl)piperazine-1-carboxylate
4-(4-aminophenyl)-1-t-butyloxycarbonylpiperazine
di-tert-butyl dicarbonate
tert-butyl 4-(4-((4-chloro-5-(trifluoromethyl)pyrimidin-2-yl)amino)phenyl)piperazine-1-carboxylate