Synonyms: p-Butyrotoluidide,3',5'-dichloro-2-(2,4-di-tert-pentylphenoxy)-2'-hydroxy- (6CI,7CI,8CI);2-(2,4-Di-tert-amylphenoxy)-N-(3,5-dichloro-4-methyl-2-hydroxyphenyl)butyramide;2-[a-(2,4-Di-tert-amylphenoxy)butyramido]-4,6-dichloro-5-methylphenol;2-[a-(2,4-Di-tert-pentylphenoxy)butyramido]-4,6-dichloro-5-methylphenol;