L-4FPG inhibits the neutral amino acid transporters ASCT1 and ASCT2. It also shows good brain penetration and potently reduces amphetamine-induced hyperlocomotion.

Dynorphin B (1-9) is a neuropeptide and N-terminal cleavage product of dynorphin B. The formation of dynorphin B (1-9) is blocked by N-ethylmaleimide (NEM), a non-selective inhibitor of cysteine peptidases.

hSMG-1 inhibitor 11e is a potent and selective hSMG-1 kinase inhibitor with an IC50 of 900-fold selectivity over mTOR (IC50 of 45 nM), PI3Kα/γ (IC50s of 61 nM and 92 nM) and CDK1/CDK2 (IC50s of 32 μM and 7.1 μM).