the well known high allergenic potential of n-phenyl n'-isopropyl paraphenylenediamine ( i.p.p.d . ) , as well as that of n-phenyl n'-1,3 dimethylbutyl paraphenylenediamine , though allegedly milder , prompted us to investigate the allergenicity of a series of n-phenyl n'-alcoyl paraphenylenediamines .
C0048678
paraphenylenediamine
C0002092
allergenicity