ኣብ 1937፡ እቲ ኣዝዩ ሰፊሕ ዝኾነ P-phenylenediamine ጸረ-እርጋን መሳርሒ ተማሂዙ፡ እዚ ድማ "4000 Series Anti-Garging Agent" ተባሂሉ ይጽዋዕ ነበረ፡ 4010, 4010NA, 4020, 4030. ሓዊሱ።
ጸረ-ኦክስጅን 4010NA: ብጸረ-ኦክስጅን IPPD, N-isopropyl-N, ፊኒል-ፒ-ፊኒሊንዲያሚን.
ጸረ-ኦክስጅን 4010: ብጸረ-ኦክስጅን CPPD, N-cyclohexyl-n'-phenyl-p-phenylenediamine. ተባሂሉ ዝፍለጥ
ጸረ-ኦክስጅን 4020: ብጸረ-ኦክስጅን 6PPD, N-(1,{4}}ዳይሜቲል)ቡቲል-n'-ፊኒል-P-ፌኒሊንዲያሚን. ተባሂሉ ዝፍለጥ
ጸረ-ኦክስጅን 4030: ብጸረ-ኦክስጅን 7ppd, n, n'-bis(1,{4}}ዳይሜቲልፐንቲል)-P-Phenylenediamine. ተባሂሉ ይፍለጥ።