(±)-Taxifolin ((±)-Dihydroquercetin) is the racemate of Taxifolin, a flavonoid with anti-tyrosinase and anti-fibrotic activity, commonly found in onion, silymarin, French maritime pine bark, and Douglas fir bark. It inhibits collagenase with an IC50 value of 193.3 μM and acts as a free radical scavenger with antioxidant capacity.

P505-15 Acetate is a selective inhibitor of spleen tyrosine kinase that acts by suppressing leukocyte immune function and inflammation and leading to a reduction in arthritis score and attenuated histological damage.

Aloesin is a C-glycosylated chromone compound found in aloe (Liliaceae) that inhibits tyrosinase (IC50 = 0.9 mM) an enzyme responsible for catalyzing the first step of the conversion of tyrosine to melanin.