Buspirone EP Impurity-D

2,2′-[Oxybis[butane-1,4-diyl(piperazine-1,4-diyl)]]dipyrimidine; 2,2'-((oxybis(butane-4,1-diyl))bis(piperazine-4,1-diyl))dipyrimidine; Buspirone Bispyrimidinylpiperazinylbutyl Ether; Bis{4-[1-(pyrimidine-2-yl)piperazine-4-yl]butane-1-yl} Ether (USP); 2,2'-(4,4'-(Oxybis(butane-4,1-diyl))bis(piperazine-4,1-diyl))dipyrimidine Hydrochloride; 2,2'-((oxybis(butane-4,1-diyl))bis(piperazine-4,1-diyl))dipyrimidine hydrochloride; Buspirone Bispyrimidinylpiperazinylbutyl Ether Impurity Hydrochloride Salt