Description_x000D_ Packaging_x000D_ 1, 5 g in glass bottle_x000D_ Biochem/physiol Actions_x000D_ Putative endogenous neurotransmitter at imidazoline receptors; displaces clonidine at α2-adrenergic and at imidazoline receptors; blocks NMDA-activated ion channels in hippocampal neurons._x000D_ Features and Benefits_x000D_ This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®1280), a biologically annotated collection of high-quality, ready-to-screen compounds. Click here to learn more._x000D_ Legal Information_x000D_ LOPAC is a registered trademark of Sigma-Aldrich Co. LLC