Acibenzolar-S-methyl is a fungicide. Acibenzolar-S-methyl works by activating a plant's own defense system by increasing the transcription of W-box controlled genes such as CAD1, NPR1, and PR2.
AP 811, a selective antagonist of the atrial natriuretic peptide clearance receptor (APN-CR, NPR3) with a K i value of 0.48 nM, exhibits remarkable selectivity for NPR3 over NPR1 by more than 20,000-fold. Moreover, AP 811 effectively eliminates ANP-induced pump stimulation.