1,2-Propyleneimine 1,2-Propylenimine 2-Methylazacyclopropane 2-Methylaziridine 2-Methylethylenimine 75-55-8 Aziridine, 2-methyl- Methylaziridine Methylethylenimine NSC20655 Propyleneimine Propyleneimine, inhibited Propylenimine WLN: T3MTJ B1