PTH-Lysine

α-PTH-DL-lysine

PHENYLTHIOHYDANTOIN LYSINE)

5-(4-Aminobutyl)-3-phenyl-2-thioxo-4-imidazolidinone

3-Phenyl-5-(4-aminobutyl)-2-thioxoimidazolidine-4-one

2-Thioxo-3-phenyl-5-(4-aminobutyl)imidazolidine-4-one