I.U.P.A.C.Nomenclature (uses carboxylic acid template) 八人3 drop "ic acid"add "yl chloride" drop "acid"add "anhydride" pentanoyl chloride pentanoic anhydride OCH3 NH2 "alkyl"drop "ic acid"add "ate" drop "oic acid"add "amide" methyl pentanoate pentanamide CN drop "ic acid"add "e nitrile" pentanenitrileI.U.P.A.C. Nomenclature (uses carboxylic acid template) O Cl O O O O OCH3 O NH2 CN pentanoyl chloride pentanoic anhydride methyl pentanoate pentanamide pentanenitrile drop "ic acid" add "yl chloride" drop "acid" add "anhydride" "alkyl" _ drop "ic acid" add "ate" drop "oic acid" add "amide" drop "ic acid" add "e_nitrile