2-Ethoxyethanol-1,1,2,2-D4

1-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopropaneamido]cyclobutane-1-carboxylic acid

5-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,3-thiazole-5-amido]-1-methyl-1H-pyrazole-4-carboxylic acid

4-{2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethoxy]acetamido}-1-methyl-1H-pyrazole-5-carboxylic acid

rac-(1R,6S)-2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbutanoyl]-2-azabicyclo[4.1.0]heptane-1-carboxylic acid

2-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,2-oxazole-3-carbonyl]-2-azabicyclo[4.1.0]heptane-1-carboxylic acid

2-({2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-3,3,3-trifluoropropanamido}methyl)-3-methylbutanoic acid

(2R)-2-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-3,3,3-trifluoropropanamido}-3-hydroxypropanoic acid

2-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-3,3,3-trifluoropropanamido}-3,3-dimethylbutanoic acid

3-{[(2S)-3-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]methyl}-2,2-difluorocyclopropane-1-carboxylic acid

2-{3-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]phenoxy}acetic acid