EINECS 238-565-2;2-Butenedioic acid (2Z)-,1-(2-cyanoethyl) ester;2-Butenedioic acid (2Z)-,mono(2-cyanoethyl) ester;2-Butenedioic acid (Z)-,mono(2-cyanoethyl) ester;Maleic acid,ester with hydracrylonitrile;
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