N-Methyl-DL-valine is a valine derivant, is metabolized to cysteine, alanine, tyrosine, tryptophan, citric acid, and succinic acid in the sprout. N-Methyl-DL-valine involves in the modification of monomethyl auristatin F (MMAF), an anti-tubulin agent, makes it hydrophobic functionalization and increases cell permeability[2].