Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 92-67-1, Whether you call it 4-Aminobiphenyl, 4-Phenylaniline , 4-Biphenylamine or 4-Biphenylylamine you can be assured the 4-Aminobiphenyl products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.