≥99% [HPLC]. Free ONP < 300 ppm.
beta-Glucosidase substrate: M.A. Jermyn, Aust. J. Biol. Sci., 8, 541 (1955). As a reagent in the investigation of immunologically based separations in capillary electrophoresis: H. Ljungberg et al., Electrophoresis, 19, 461 (1998).