4,4'-[(Phenylmethylene)bis[(2,5-dimethyl-4,1-phenylene)-2,1-diazenediyl]]bis[3-hydroxy-N-phenyl-2-naphthalenecarboxamide

Applications 4,4'-[(Phenylmethylene)bis[(2,5-dimethyl-4,1-phenylene)-2,1-diazenediyl]]bis[3-hydroxy-N-phenyl-2-naphthalenecarboxamide, can be used for the preparation of paper strips containing indicator dyes, which change color upon exposure to certain chemical warfare agents but not to common solvents. References Nestmann, E., et al.: Carcinogenesis, 2, 879 (1981);