P-gp inhibitor 4

P-gp inhibitor 5

P-gp inhibitor 2

P-gp inhibitor 1

Valspodar

p-[4,5-dihydro-4-[[2-methoxy-5-methyl-4-[[2-(sulphooxy)ethyl]sulphonyl]phenyl]azo]-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulphonic acid

p-[[4-[(2-hydroxy-1-naphthyl)azo]phenyl]azo]benzenesulphonic acid, compound with 2-(dimethylamino)ethanol (1:1)

1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanoyl]azetidine-3-carboxylic acid

4-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pent-4-enamido]-3-methylbutanoic acid

5-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-2-methylpentanoic acid

1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3,3-dimethylbutanoyl]azetidine-3-carboxylic acid

2-{1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbutanoyl]azetidin-3-yl}acetic acid

(4R)-3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbutanoyl]-1,3-thiazolidine-4-carboxylic acid

2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methyl-N-propylbutanamido]acetic acid

1-{2-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]acetyl}piperidine-4-carboxylic acid

3-Formyl-4-hydroxythiophene-2-carboxylic acid

2-{1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,3-thiazole-4-carbonyl]piperidin-3-yl}acetic acid