These compounds help control vertebrate parasites, especially endoparasites. 1. Claim 1: a formula compound (1) or a salt or a corresponding substance, wherein X is O, s, Nr,it is life.C (CN) or CH = CH； R⁰ is H, C₁₋₄ alkyl or hydroxyl； n is 0 or 1； each R is independently halogen； C₁₋₆ alkyl；a. Halogenated tar c83218d31832626；C₃₋₆ cycloalkyl；C₃₋₆ halocycloalkyl；a. Amino； n-mono-o n, n-di-rental Mino c832131hydroxy； C₁₋₆ alkoxy；C₁₋₆ haloalkoxy；1. C8332121 asphalt；a. Halogenated tar c83218d31832626；1. C833218331-832626 sulfur； halogenated tar c83321131；C₁₋₆ alkylsulfonyl；1. Halogenated tar c83216c83183226；SF8325；3. Tri asphalt c83321e 83318324；C₁₋₆ alkoxycarbonyl；aminocarbonyl； N-mono- or N, N-di-C-alkylaminocarbonyl；a. Keywords sulfamoyl ammonium； n-mono-o n, n-di-let a small number of sulfuryl c83321g-833126；n. N-asphaltic amide c832131；C₁₋₆ alkoxycarbonylamino；N-C₁₋₄-N-C-alkoxycarbonylamino alkyl；cyano； nitro； or C₃₋₆ heterocyclyl which is unsubstituted or substituted by halogen, C₁₋₄ alkyl,C₁₋₄ haloalkyl,C₃₋₆ cycloalkyl,C₁₋₄ alkoxy,C₁₋₄ haloalkoxy,amino, cyano or nitro； m is an integer from 0 to 4； each R¹ is independently halogen； C₁₋₆ alkyl；a. Halogenated tar c83218d31832626；C₃₋₆ cycloalkyl；C₃₋₆ halocycloalkyl；C₁₋₆ alkoxy；C₁₋₆ haloalkoxy；1. C8332121 asphalt；a. Halogenated tar c83218d31832626；1. C833218331-832626 sulfur； halogenated tar c83321131；C₁₋₆ alkylsulfonyl；1. Halogenated tar c83216c83183226；SF8325；Not me； N-mono- or N, N-di-C₁₋₆ alkylamino；3. Tri asphalt c83321e 83318324；C₁₋₆ alkoxycarbonyl；aminocarbonyl； N-mono- or N, N-di-C-alkylaminocarbonyl；n. N-di-let c832131；a. Keywords sulfamoyl ammonium； n-mono-o n, n-di-let a small number of sulfuryl c83321g-833126；n. N-asphaltic amide c832131；C₁₋₆ alkoxycarbonylamino；N-C₁₋₄-N-alkoxycarbonylamino-C₁₋₆ alkyl；ciano nitro hidroxi B (OH)O fenilo, benzoilo, isoacrylonitrile c833238331-832626；C₃₋₆ heterocyclyloxy or C₆₋₈ benzoheterocyclyl,each of which is unsubstituted or substituted by halogen, C₁₋₄ alkyl,C₁₋₄ haloa
