Piceatannol 3'-O-glucoside is a natural product isolated and purified from the roots of Rheum palmatum L..

4-Hydroxy-3-methoxycinnamaldehyde is an isoflavonoid isolated and purified from Senra incana with anti-apoptosis activity.

BEC HCl is a competitive arginase inhibitor with Ki of 0.31 μM and 0.4-0.6 μM for Arginase II and rat Arginase I respectively.

H-DL-Nva-OH is the derivative of L-norvaline which is an inhibitor of arginase.

CB-1158 is a potent arginase inhibitor. CB-1158 has the potential for anti-tumor activity in renal cell cancer, breast cancer, non-small cell lung cancer, acute myeloid leukemia, and other tumor types where arginase-secreting MDSCs are known to play an immunosuppressive role.

Broussonin E is a natural product isolated and purified from the branch of Broussonetia papyrifera.

Arginase inhibitor 1 is a potent small molecule inhibitor of human arginases I and II with IC50s of 223 and 509 nM, respectively.