Classification Term: 3333
Benzidines (ontology term: CHEMONTID:0003955)
found 6 associated metabolites at category metabolite taxonomy ontology rank level.
Ancestor: Biphenyls and derivatives
Child Taxonomies: 3,3'-disubstituted benzidines
Benzidine
Benzidine is prepared in a two step process from nitrobenzene. First, the nitrobenzene is converted to 1,2-diphenylhydrazine, usually using iron powder as the reducing agent. Treatment of this hydrazine with mineral acids induces a rearrangement reaction to 4,4-benzidine. Smaller amounts of other isomers are also formed. The benzidine rearrangement, which proceeds intramolecularly, is a classic mechanistic puzzle in organic chemistry. Benzidine, the trivial name for 4,4-diaminobiphenyl, is the solid organic compound with the formula (C6H4NH2)2. This aromatic amine is a component of a test for cyanide and also in the production of dyes. Benzidine has been linked to bladder and pancreatic cancer. Since August 2010 benzidine dyes are included in the EPAs List of Chemicals of Concern.
3,3',5,5'-Tetramethylbenzidine
D019995 - Laboratory Chemicals > D007202 - Indicators and Reagents > D002863 - Chromogenic Compounds D004396 - Coloring Agents
