AUNP-12 TFA (NP-12 TFA) is a polypeptide antagonist in the pd-1 signaling pathway, which has the same antagonistic effect on pd-l1 and pd-l2, and can protect the proliferation and effector function of lymphocytes.

N-Acetyl-L-phenylalanine is an essential amino acid produced for medical feed and nutritional applications. It appears in large amount in urine of patients with phenylketonuria which is a human genetic disorder due to the lack of phenylalanine hydroxylase the enzyme necessary to metabolize phenylalanine to tyrosine.

Potent and reversible Kv3.4 potassium channel blocker (IC50 = 47 nM); also attenuates inactivation of sodium currents by acting on Nav1.7 and Nav1.3 channels. Enhances TTX-sensitive sodium currents in rat small dorsal root ganglion neurons. Neuroprotective.