Biphenyl compounds substituted in any position by one or more amino groups. Permitted
are any substituents except fused rings.
https://reptox.cnesst.gouv.qc.ca/pages/fiche-complete.aspx?no_produit=10405&nom=AMINO%2D2+DIPHENYLE Canada French aminobiphenyl compounds 2-aminodiphenyl toxicological data sheet