3-Amino-1-(3,4-dichloro-α-methyl-benzyl)-2-pyrazolin-5-one (Bay g 2821), a potent diuretic from a new substance class

Abstract
Chemistry, salidiuretic activity and mechanism of action of 3-amino-1-(3,4-dichloro-α-methyl-benzyl)-2-pyrazolin-5-one (Bay g 2821), a new diuretic, are described. Owing to the initial rapid onset of activity, the reserve in capacity and the additional long duration of activity, this substance represents a potent diuretic and antihypertensive agent.