- A glucoside resin which is one of the purgative principles of jalap and of various plants of the convolvulaceous order. See <internalXref urlencoded="jalap">jalap</internalXref>.
- A glucoside found in the stems of the jalap plant and scammony. It is a strong purgative.
- The active principle of <xref>scammony</xref>, the <xref>glucoside</xref> with <xref>chemical formula</xref> C34H114O6, a powerful <xref>purgative</xref>.