anagrelide [ 6,7-dichloro-1,5-dihydroimidazo(2,1-b)quinazolin-2(3H)-one hydrochloride,Agrelin,Agrylin,BL 4162A,Orphan brand of anagrelide hydrochloride,Roberts brand of anagrelide hydrochloride,Shire brand of anagrelide hydrochloride,anagrelide hydrochloride,imidazo(2,1-b)quinazolin-2(3H)-one, 6,7-dichloro-1,5-dihydro-, monohydrochloride ] imidazoquinazoline derivative which lowers platelet count probably by inhibiting thrombopoiesis and reduces platelet aggregation; used for thrombocythemia; structure in first source