text: We examined the effect of JTH-601 (3- inverted question markN-[2-(4-hydroxy-2-isopropyl-5-methylphenoxy)ethyl]-N-methylaminom << ethyl >> inverted question mark-4-methoxy-2,5,6-trimethylphenol hemifumarate), a new [[ alpha(1L)-adrenoceptor ]] antagonist, on prostatic function in isolated canine prostate and in anesthetized dogs.