4,4'-Methylenedianiline <unk>  is a suspected carcinogen.
It is included in the "substances of very high concern" list of the European Chemicals Agency (ECHA).  The compound was involved in an accidental mass poisoning in the vicinity of Epping, Essex, United Kingdom during 1965 during which 84 individuals were poisoned through accidental contamination of flour used to make bread.
Methylene Dianiline
Aniline
Dimethylaminopropionylphenothiazine
Ethallobarbital
Allobarbital
Methcathinone
Flutemetamol F 18
Hexobarbital