Pyrabactin is primarily used as a plant growth regulator, specifically as an abscisic acid (ABA) agonist. It mimics the effects of ABA, a natural plant hormone involved in seed dormancy and stress responses. One of its key applications is in agricultural research to improve plant tolerance to drought and other environmental stresses. By activating ABA receptors, pyrabactin triggers the closure of stomata, reducing water loss and enhancing a plant’s ability to conserve moisture. This makes it a valuable tool in developing strategies for drought-resistant crops. It is also used in laboratory studies to understand ABA signaling pathways and to screen for compounds that can modulate plant stress responses. Due to its synthetic nature and stability, pyrabactin serves as a practical alternative to ABA in experimental settings.