Structure--activity relations. I. A series of antagonists of acetylcholine and histamine at the postganglionic receptors.
D000109:Acetylcholine / Q000037:antagonists & inhibitors*; D000588:Amines / Q000494:pharmacology*; D000818:Animals; D055598:Chemical Phenomena; D002621:Chemistry; D004952:Esters / Q000494:pharmacology; D006168:Guinea Pigs; D006633:Histamine Antagonists; D006863:Hydrogen-Ion Concentration; D007082:Ileum / Q000187:drug effects; D011984:Sensory Receptor Cells / Q000187:drug effects*
D000588:Amines; D004952:Esters; D006633:Histamine Antagonists; D000109:Acetylcholine