(S)-2-[(R)-2-hydroxy-1-phenylethylamino]-3-methylbutanoic acid

isovaleryl-L-tyrosyl-L-valyl-D-tyrosinol

(6S)-6-isopropyl-5-methoxy-3-methyl-3,6-dihydro-2-pyrazinyl methyl ether

(2R,5S)-2-(2-(bromomethyl)benzyl)-5-isopropyl-3,6-dimethoxy-2-methyl-2,5-dihydropyrazine

lithium (S)-2-isopropyl-3,6-dimethoxy-5-methyl-2H-pyrazin-1-ide