Synonyms: 4-Pentynoic acid, 2-(2-propyn-1-yl)-, 4-Pentynoic acid, 2-(2-propynyl)- (6CI,7CI,9CI); 2-(2-Propyn-1-yl)-4-pentynoic acid; 2-(Prop-2-yn-1-yl)pent-4-ynoic acid; 2-Propargyl-4-pentynoic acid; 4-Carboxy-1,6-heptadiyne; Dipropargylacetic acid