Synonyms: | 6,8,9,10-Tetrahydro-6,10-methano-7H-pyrazino[2,3-h][3]benzazepin-7-one;Varenicline Lactam;6,8,9,10-Tetrahydro-;Varenicline Lactam Impurity;6,10-Methano-7H-pyrazino[2,3-h][3]benzazepin-7-one, 6,8,9,10-tetrahydro-;Flunitrazepam Impurity 10;Varnicline Lactone Impurity |