A77 1726; (Z)-2-cyano-3-hydroxy-N-(4-(trifluoromethyl)phenyl)but-2-enamide; CAS No.: 163451-81-8; (Z)-2-cyano-3-hydroxy-N-(4-(trifluoromethyl)phenyl)but-2-enamide is a white solid. Store dry at ambient temperature. This compound is stable if sealed; CAS No.: 163451-81-8 prevents light exposure.