Rebaudioside M is a rebaudioside that is rebaudioside A in which the the hydroxy groups at positions 2 and 3 of the beta-D-glucosyl ester moiety have both been converted to the corresponding beta-D-glucoside. Found in very low concentraitions in the leaves of Stevia Rebaudiana, it is more than 200 times sweeter than sucrose. It has a role as a sweetening agent. It is a rebaudioside and a beta-D-glucoside.

Scullcapflavone II is a tetramethoxyflavone that is flavone substituted by methoxy groups at positions 6, 7, 8 and 6' and hydroxy groups at positons 5 and 2' respectively. It has a role as an anti-asthmatic drug, an EC 1.6.5.2 [NAD(P)H dehydrogenase (quinone)] inhibitor and a plant metabolite. It is a dihydroxyflavone and a tetramethoxyflavone. It is functionally related to a flavone. Skullcapflavone II is a flavonoid derived from Scutellaria baicalensis, a widely used herbal medicine in anti-inflammatory and anticancer therapy in Korea. Skullcapflavone II may have therapeutic potential for the treatment of allergic asthma.