2,4(1H,3H)-Pyrimidinedione, 1(or 3)-(2-chloroethyl)-5-[(2-chloroethyl)ethylamino]-, monohydrochloride MP 510 NSC39278 Uracil, 1(or 3)-(2-chloroethyl)-5-[(2-chloroethyl)ethylamino]-, hydrochloride