different between senegin vs polygalic

English

senega +? -in

senegin (uncountable)

(organic chemistry) A substance extracted from the rootstock of the Polygala senega (Seneca root), probably identical with polygalic acid.

Polygala +? -ic

polygalic (not comparable)

(chemistry) Of, pertaining to, or obtained from Polygala; specifically, designating an acrid glucoside (called polygalic acid, senegin, etc.), resembling, or possibly identical with, saponin.

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