A cikin 1937, mafi cikakken p-phenneenceendiatine Anti-tsufa wakilin da aka kirkira, wanda ake kira "wakili na tsufa" 410, ciki har da 4010, 40, {{
Antioxidant 4010na: wanda kuma aka sani da Ippd IPPD, n-iOpropyl-n, phenyl-p-phenylediamine {{5}
Antioxidant 4010: wanda kuma aka sani da CPPD CPPD, n-cyclohexyl-p-phenylenliamine {{6}
AntioxIDant 4020: kuma ana kiranta da antioxidant 6ppd, n- (1, {{{{{{he -leendiamine {{9}
Antioxidant 4030: wanda kuma aka sani da Antioxidant 7ppd, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, {7