we compared several phenylenediamines ( 4-nitro-o-phenylenediamine , nop ; 2-nitro-p-phenylenediamine , npd ; o-phenylenediamine , opd ; p-phenylenediamine , ppd ; m-phenylenediamine , mpd ) and aniline ( anl ) for mutagenicity to salmonella directly and following activation by plant and mammalian hepatic s9 using plate incorporation and preincubation protocols .
C0031468
phenylenediamines
C0048678
p-phenylenediamine