D-Glutamic acid, N-(3-carboxy-1-oxopropyl)-

L-Glutamic acid,N-[3-[4-[[(2,4-diamino-6-pteridinyl)methyl]amino]phenyl]-1-oxopropyl]-

l-Aspartic acid, N-(3-carboxy-1-oxo-3-sulfopropyl)-, N-tallow alkyl derivs., tetrasodium salts

(S)-4-((1,5-Bis(hexadecyloxy)-1,5-dioxopentan-2-yl)amino)-4-oxobutanoic acid

(2S)-2-(3-carboxypropanoylamino)-4-methylpentanoic acid

4-oxo-4-((2R,3R,4S,5S,6R)-3,4,5-triacetoxy- 6-(acetoxymethy

N-Succinyl-L-Tyrosine