Description: Scyliorhinin I is an agonist for both neurokinin-1 (NK-1) and neurokinin-2 (NK-2) receptors, exhibiting a Ki value of 0.9 nM at rat submandibular gland NK-1 receptors and 2 nM at hamster bladder NK-2 receptors. Additionally, it possesses the capability to contract the longitudinal muscle of the guinea pig ileum.