NSC2805 is an inhibitor of WWP2, an E3 ubiquitin ligase with an IC50 of 0.38 μM. NSC2805 can be used in anticancer studies.

Levothyroxine, the major hormone derived from the thyroid gland, is the agonist of Thyroid hormone receptor alpha and beta.evothyroxine (L-T(4))can upregulate the expression of P-gp mRNA and protein in LS180 cells, but only L-T(4) and L-T(3) can produce the same effect in Caco-2 cells, which are relatively lacking in PXR.

H-Gly-Pro-OH is a dipeptide composed of glycine and proline, and is an end product of collagen metabolism that is further cleaved by prolidase.