1H-Pyrrolo(3,4-c)pyridine-1,3(2H)-dione (9CI) 3,4-Pyridinedicarboximide 4-Azaphthalimid [German] 4664-01-1 5-24-07-00453 (Beilstein Handbook Reference) BRN 0124195 Cinchomeronic acid imide Cinchomeronimide NSC 524479