Quercitrin is a bioflavonoid compound.

Raddeanin A is an oleanane-type triterpenoid saponin .

Resibufogenin is a agent that can be extracted from toad venom.

Rhaponticin is a SIRT1 agonist and AMPK activator.

Safflor Yellow A is a chalcone natural compound derived from Carthamus tinctorius.

Saikosaponin A is the main active ingredient of Bupleurum.

Saikosaponin C is an MMP-2 inducer that can be used in research related to ischemic tissue diseases, etc.

Saikosaponin D is a triterpene saponin isolated from Bupleurum.

Salvianolic Acid A is a water-soluble phenolic acid natural product derived from Salvia miltiorrhiza, a plant in the Lamiaceae family.

Salvianolic Acid B is an active ingredient of Salvia miltiorrhiza, which has been widely applied for the management of various microcirculation-related disorders.

Sanguinarine, a benzophenanthridine alkaloid derived from the root of Sanguinaria Canadensis.

Schizandrin A is a biphenylcyclooctadiene lignan extracted from Schisandra chinensis.

Schizandrin B is a biphenylcyclooctadiene derivative isolated from Schisandra chinensis.

Schisandrol A, a dibenzocyclooctadiene lignan, is isolated from the fruit of Schisandra chinensis Baill.

Schisandrol B is a major active constituent of Schisandra chinensis.

Scoparone is a natural coumarin compound isolated from Artemisia capillaris.