N-(1-piperidin-1-ylpropan-2-ylidene)hydroxylamine

2-piperidin-1-ylanthracene-9,10-dione

1-(phenanthren-9-ylmethyl)piperidine

1-[(4-methyl-3-nitronaphthalen-1-yl)methyl]piperidine

4-methyl-3-phenylsulphonyl-1-piperidinomethylnaphthalene