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biotransformation glycosides bioactivity studies vascular function possible immune effects botanical effects references external links chemistry[ edit ] catechin numbered catechin possesses two benzene rings (called the a- and b-rings) and a dihydropyran heterocycle (the c-ring) with a hydroxyl group on carbon
mhz, cd od): reference [ ] d : doublet, dd : doublet of doublets, m : multiplet, s : singlet δ : ( h, dd, j = , hz, h- a), ( h, dd, j = , hz, h- b), ( h, m, h- ), ( h, d, j = hz, h- ), ( h, d, j = hz, h- ), ( h, d, j = hz, h- ), ( h, dd, j = , hz, h- '), ( h, d, j = hz, h- '), ( h, d, j = hz, h- ') carbon...
https://en.wikipedia.org/wiki/Epicatechin