... It was synthesized2 initially as an antihistamine, and was tested for tran- quillizing properties in view of its close chemical simi- larity to the phenothiazines. ... Hafliger has pointed out3 that both iiiolecules have similar volume and shape, but that ... (6) Rhone-Poulenc Soc.. S. .'ifr. ...
![10,11-Dihydro-5H-dibenzo[a,d]cycloheptene-5-carbonitrile Structure](https://image.chemsrc.com/caspic/457/1729-63-1.png)