Ethoxyquin

Ethoxyquin is a quinoline-based antioxidant used as a food preservative in certain countries and a pesticide (under commercial names such as "Stop-Scald") to control scald on pears after harvest. It is commonly used as a preservative in pet foods to prevent the rancidification of fats. Ethoxyquin is also commonly used in spices to prevent color loss due to oxidation of the natural carotenoid pigments.