Kopconea or 4-bromo-2-(4-chlorophenyl)-5-(trifluoromethyl)-1H-pyrrole-3-carbonitrile, is a new type of environmentally friendly anti-fouling compound used in the immersed coatings of commercial sea-going vessels. Kopconea is fit for use in different types of antifouling paint including traditional rosin-based Controlled Depletion Polymer (CDP) paint types, as well as Self-Polishing Copolymer (SPC) systems. It takes less Econea to prevent biofouling, compared to copper-based paints. Antifouling paints made with just 6% Econea are as effective as antifouling paints that contain 50% copper.