Term Name:	Pontamine sky blue 5B (acid form)
Synonyms:	3,3'-[(3,3'-dimethoxy[1,1'-biphenyl]-4,4'-diyl)bis(diazene-2,1-diyl)]bis(5-amino-4-hydroxynaphthalene-2,7-disulfonic acid), C.I. Direct Blue 15 (acid form), C.I. Direct Blue 15 free acid, Pontamine sky blue 5B free acid
Definition:	A ring assembly consisting of two 5-amino-4-hydroxy-3-[(2-methoxyphenyl)diazenyl]naphthalene-2,7-disulfonic acid units joined by a 4,4'-linkage. The tetrasodium salt is the histological dye 'Pontamine sky blue 5B'.
Ontology:	ChEBI [CHEBI:88195]  ( EBI )