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

(S)-(+)-sec-butyl-2-methoxy-3-(p-methoxymethoxybenzyl)-pyrazine 4-oxide

(S)-(+)-6-sec-butyl-2-methoxy-3-methylpyrazine 4-oxide

(S)-(+)-6-sec-butyl-3-formyl-2-methoxypyrazine

(+)-septorine