>98% [HPLC]
Substrate for beta-glucosidase: Z. Lojda et al., Histochemie, 34, 361 (1973). Has been used in an assay for the rapid identification of enterococci: M. Manafi and R. Sommer, Wat. Sci. Tech., 27, 271 (1993). Employed in a medium to detect Staphylococcus aureus: A. Rambach, WO 00/53799 (2000).