Biochem/physiol Actions Broad spectrum phospholipase A2 (PLA2) inhibitor and TRP channel blocker. Application N-(p-Amylcinnamoyl)anthranilic acid is a broad spectrum PLA2 inhibitor and TRP channel blocker. N-(p-Amylcinnamoyl)anthranilic acid has been used to study the functional expression of TRPM2 channels in dopaminergic SNc neurons.