(S)-(+)-sec-butyl-3-(α-hydroxy-p-methoxymethoxybenzyl)-2-methoxypyrazine

(S)-(+)-6-sec-butyl-5-hydroxy-2-methoxy-3-(p-methoxymethoxybenzoyl)pyrazine

(S)-(+)-5-sec-butyl-2-methylpyrazine-1-oxide

(S)-(+)-6-sec-butyl-2-chloro-3-methylpyrazine

(S)-(+)-6-sec-butyl-3-(α-hydroxy-p-methoxymethoxybenzyl)-2-methoxypyrazine 4-oxide