1,4,5,6,7,7-Hexachloro-5-norbornene-2,3-dicarboxylic acid diethyl ester 1911-42-8 5-Norbornene-2,3-dicarboxylic acid, 1,4,5,6,7,7-hexachloro-, diethyl ester Chlorendic acid, diethyl ester NSC12450 WLN: L55 A CUTJ AG AG BG CG DG EG FVO2 GVO2