Term Name:	methyl blue free acid
Synonyms:	4,4'-{({4-[(4-sulfophenyl)imino]cyclohexa-2,5-dien-1-ylidene}methylene)bis[(4,1-phenylene)azanediyl]}di(benzene-1-sulfonic acid), Aniline blue
Definition:	An arenesulfonic acid, the disodium salt of which is the histological dye 'methyl blue' (used for staining collagen in Masson's trichrome and Mallory's method for connective tissue).
Ontology:	ChEBI [CHEBI:87477]  ( EBI )