1-(butoxymethyl)-4-ethylbenzene

O,O,O-TRIBUTYL PHOSPHOROTHIOATE

7-propyl-20(S)-camptothecin

(S)-4-Ethyl-4-hydroxy-11-(4-hydroxy-butyl)-1,12-dihydro-4H-2-oxa-6,12a-diaza-dibenzo[b,h]fluorene-3,13-dione

(S)-4-Ethyl-4-hydroxy-11-(1-hydroxymethyl-propyl)-1,12-dihydro-4H-2-oxa-6,12a-diaza-dibenzo[b,h]fluorene-3,13-dione