Ing taun 1937, agen anti-penagih P-Phenylenediamin sing paling lengkap digawe, sing diarani "4000 Agen anti-tuwa", kalebu 4010, 4010na, 4020,4030.}}}
Antioksidan 4010na: Uga dikenal minangka antioksidan Ippd, n-isopyl-n, phenyl-p-phenylenediamine .
Antioksidan 4010: Uga dikenal minangka antioksidan cppd, n-cyclheexyl-n'-phenyledl-p-phenylenedimine .
Antioksidant 4020: Uga dikenal minangka antioksidan 6ppd, n- (1, {{4 {{4 3- Dimethyl-P-Phenylenediamer .
Antioksidan 4030: Uga dikenal minangka antioksidan 7ppd, n, n, n,-bis (1, {44- DimethylEnediamine .