2-(4-Chlorophenyl)-3-oxobutyronitrile 4-10-00-02777 (Beilstein Handbook Reference) 5219-07-8 ACETOACETONITRILE, 2-(p-CHLOROPHENYL)- BRN 0744679 Benzeneacetonitrile, alpha-acetyl-4-chloro- EINECS 226-012-8 USAF EL-43 alpha-(p-Chlorophenyl)acetoacetonitrile