AC 1903 is primarily used in research settings as a potent and selective agonist for the TRPA1 ion channel. It is utilized to study pain signaling pathways, particularly those involved in inflammatory and neuropathic pain. Due to its ability to selectively activate TRPA1 receptors, AC 1903 helps scientists investigate the role of these channels in sensory neurons and their contribution to thermal and mechanical hypersensitivity. It is also employed in preclinical studies to evaluate potential analgesic compounds by inducing controlled pain responses in experimental models. Its high selectivity makes it a valuable tool for probing TRPA1-dependent physiological processes without significant off-target effects.