N-Acetyl-R-leucine is an amino-protecting group N-substituted chiral amino acid. N-Acetyl-R-leucine is a PepT1 and MCT1 inhibitor with IC50 of 0.74 and 11 mM, respectively. N-Acetyl-R-leucine can be used for LysoTracker signaling studies[1][2][3][4].