2-(Acetyloxy)-1,2,3-propanetricarboxylic Acid 1,2-Dibutyl Ester-d18 is labelled 2-(Acetyloxy)-1,2,3-propanetricarboxylic Acid 1,2-Dibutyl Ester (A165355) which is an analog of 2-Hydroxy-1,2,3-propanetricarboxylic Acid 1-Butyl Ester (H952250). 2-Hydroxy-1,2,3-propanetricarboxylic Acid 1-Butyl Ester (H952250) is a plasticizer.