Biochem/physiol Actions Naturally occurring phenylpropene derivative that is estrogenic at lower concentrations and cytotoxic at higher concentrations to cancer cell lines. The cytotoxicity is related to the metabolism of trans-anethole to 4-hydroxy-1-propenylbenzene. Packaging 1 kg in glass bottle 5 kg in steel drum 1 sample in glass bottle 10 kg in poly drum