5-tert-butyl-6-chloro-N-(2-bromo-3-methylphenyl)pyrazine-2-carboxamide
5-tert-butyl-6-chloro-N-(3-iodo-4-methylphenyl)pyrazine-2-carboxamide
5-tert-butyl-6-chloro-N-(4-methoxybenzyl)pyrazine-2-carboxamide
5-tert-butyl-6-chloro-N-(4-chlorobenzyl)pyrazine-2-carboxamide
5-tert-butyl-6-chloro-N-(3-trifluoromethylbenzyl)pyrazine-2-carboxamide