熒光素二(beta-D-吡喃葡萄糖苷), FDGlu,  Fluorescein di-b-D-glucopyranoside

Fluorescein di-b-D-glucopyranoside is a fluorescent probe that binds to the glucosylceramide receptor. The in vitro assays showed that it inhibits amide hydrolase and fatty acid amide hydrolase activities. Fluorescein di-b-D-glucopyranoside can also inhibit the enzyme activity of gamma-aminobutyric acid (GABA) transaminase and oxadiazole synthase. This compound is a selective inhibitor of CB2 receptor, which is expressed in primary cells and has been shown to be involved in inflammatory responses.

Fluorescein Di-(β-D-glucopyranoside) is an ultrasensitive fluorogenic substrate for measurement of β-glucosidase activity in vivo or in vitro.