Term Name:	nuclear fast red free acid
Synonyms:	4-amino-1,3-dihydroxy-9,10-anthraquinone-2-sulfonate, 4-amino-1,3-dihydroxy-9,10-dioxo-9,10-dihydroanthracene-2-sulfonic acid, calcium red (acid form), calcium red free acid, nuclear fast red (acid form)
Definition:	A member of the class of hydroxyanthraquinones that is 1,3-dihydroxyanthraquinone carrying additional sulfo and amino substituents at positions 2 and 4 respectively. The sodium salt is the histological dye 'nuclear fast red'
Ontology:	ChEBI [CHEBI:88179]  ( EBI )