Fenethazine
Fenethazine is a first-generation antihistamine of the phenothiazine group. Promethazine and chlorpromazine, were derived from fenethazine. Fenethazine, in turn, was derived from phenbenzamine.
Fenethazine is a first-generation antihistamine of the phenothiazine group. Promethazine and chlorpromazine, were derived from fenethazine. Fenethazine, in turn, was derived from phenbenzamine.