4'-Amino-2',5'-diethoxybenzanilideN-(4-Amino-2,5-diethoxyphenyl)benzamideFAST BLUE BB BASEAzoic Diazo No. 204-BENZOYLAMINO-2,5-DIETHOXYANILINEFast Blue BB Base solutionFast blue BBN-(4-Amino-2,5-diethoxyphenyl)benzamide4′-Amino-2′,5′-diethoxybenzanilide