1-Boc-4-(4-Formylphenyl)piperazine
4-(4-Methylpiperazin-1-yl)benzaldehyde
4-(4-Ethylpiperazin-1-yl)benzaldehyde
tert-Butyl 4-(4-formyl-3-hydroxyphenyl)piperazine-1-carboxylate
4-(4-Acetylpiperazin-1-yl)benzaldehyde
