OBO ID: CHEBI:31991

Term Name:	phenol red		Search Ontology:
Synonyms:	3,3-bis(p-hydroxyphenyl)-3H-2,1-benzoxathiole 1,1-dioxide 4,4'-(1,1-dioxido-3H-2,1-benzoxathiole-3,3-diyl)diphenol 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bisphenol S,S-dioxide alpha-hydroxy-alpha,alpha-bis(p-hydroxyphenyl)-o-toluenesulfonic acid gamma-sultone Phenol red Phenolsulfonphthalein PSP
Definition:	3H-2,1-Benzoxathiole 1,1-dioxide in which both of the hydrogens at position 3 have been substituted by 4-hydroxyphenyl groups. A pH indicator changing colour from yellow below pH 6.8 to bright pink above pH 8.2, it is commonly used as an indicator in cell cultures and in home swimming pool test kits. It is also used in the (now infrequently performed) phenolsulfonphthalein (PSP) test for estimation of overall blood flow through the kidney.
References:	Beilstein:326470 CAS:143-74-8 Drug_Central:3439 KEGG:C12600 KEGG:D01200
Ontology:	ChEBI  ( EBI )