... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > carbon group molecular entity > organic molecular entity > organic ion > organic anion > carboxylic acid anion > dicarboxylic acid anion > dicarboxylic acid monoanion > 2-ammonio-3-(3-oxoprop-1-enyl)but-2-enedioate(1-)

... > chemical entity > molecular entity > ion > organic ion > organic anion > carboxylic acid anion > dicarboxylic acid anion > dicarboxylic acid monoanion > 2-ammonio-3-(3-oxoprop-1-enyl)but-2-enedioate(1-)

... > chemical entity > molecular entity > ion > anion > organic anion > carboxylic acid anion > dicarboxylic acid anion > dicarboxylic acid monoanion > 2-ammonio-3-(3-oxoprop-1-enyl)but-2-enedioate(1-)

... > chemical entity > molecular entity > polyatomic entity > heteroatomic molecular entity > oxide > oxoanion > carboxylic acid anion > dicarboxylic acid anion > dicarboxylic acid monoanion > 2-ammonio-3-(3-oxoprop-1-enyl)but-2-enedioate(1-)

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > chalcogen molecular entity > oxygen molecular entity > oxide > oxoanion > carboxylic acid anion > dicarboxylic acid anion > dicarboxylic acid monoanion > 2-ammonio-3-(3-oxoprop-1-enyl)but-2-enedioate(1-)

... > chemical entity > molecular entity > polyatomic entity > polyatomic ion > polyatomic anion > oxoanion > carboxylic acid anion > dicarboxylic acid anion > dicarboxylic acid monoanion > 2-ammonio-3-(3-oxoprop-1-enyl)but-2-enedioate(1-)

... > chemical entity > molecular entity > ion > polyatomic ion > polyatomic anion > oxoanion > carboxylic acid anion > dicarboxylic acid anion > dicarboxylic acid monoanion > 2-ammonio-3-(3-oxoprop-1-enyl)but-2-enedioate(1-)

... > chemical entity > molecular entity > ion > anion > polyatomic anion > oxoanion > carboxylic acid anion > dicarboxylic acid anion > dicarboxylic acid monoanion > 2-ammonio-3-(3-oxoprop-1-enyl)but-2-enedioate(1-)