Determinations of the presence and/or amount of the diarylheptanoid glucoside platyphylloside were made on the inner bark of about 70 taxa of Betula (birch). These tests included a simple precipitation reaction with 2,4-dinitrophenylhydrazine and HPLC analyses. The presence or absence of platyphylloside levels detectable by the precipitation test appear to be species characteristics that are not dependent on provenance of origin or the climate in the locality where the trees are planted, Platyphylloside tests were useful in confirming or questioning species identifications and in verifying interspecific hybrids arising from natural crossing or controlled pollination.
Santamour, F. S., & Lundgren, L. N. (1996). Distribution and inheritance of platyphylloside in Betula. Biochemical Systematics and Ecology, 24(2), 145–156. https://doi.org/10.1016/0305-1978(95)00106-9