Kittelmann, Matthias, et al. “Microbial Hydroxylation and Simultaneous Formation of the 4’’-O-Methylglucoside of the Tyrosine-Kinase Inhibitor CGP 62706”. CHIMIA, vol. 53, no. 12, Dec. 1999, p. 594, doi:10.2533/chimia.1999.594.