Polyphenolic compounds with molecular weights of around 500-3000 daltons and containing enough hydroxyl groups (1-2 per 100 MW) for effective cross linking of other compounds (ASTRINGENTS).

Arctiin(NSC 315527), a plant lignan that can be extracted from the Arctium lappa (burdock) seeds, is a possible environmental endocrine disruptor compound and have been shown to influence sex hormone metabolism as well as protein synthesis, steroid biosynthesis.

ARDP0006 is an inhibitor of NS2B-NS3 protease.