OBO ID: CHEBI:75055

Term Name:	5-bromo-4-chloro-3-indolyl beta-D-galactoside		Search Ontology:
Synonyms:	5-bromo-4-chloro-1H-indol-3-yl beta-D-galactopyranoside 5-bromo-4-chloro-3-indolyl beta-galactoside 5-bromo-4-chloroindol-3-yl-beta-D-galactopyranoside BCIG Indoxyl-Gal X-Gal
Definition:	An indolyl carbohydrate that is the beta-D-galactoside of 3-hydroxy-1H-indole in which the indole moiety is substituted at positions 4 and 5 by chlorine and bromine, respectively. It is used to test for the presence of an enzyme, beta-galactosidase, which cleaved the glycosidic bond to give 5-bromo-4-chloro-3-hydroxy-1H-indole, which immediately dimerises to give an intensely blue product.
References:	CAS:7240-90-6 PMID:16497398 PMID:1725950 PMID:20150093 PMID:21357066 PMID:2139935 PMID:22301646 PMID:22639266 PMID:22929213 PMID:8373598 PMID:8431289 Reaxys:1552604 Wikipedia:X-gal
Ontology:	ChEBI  ( EBI )