Table 1.

IC₅₀ range estimated by an ELISA assay. Inhibition was tested at five different concentrations (100, 10, 1, 0.1 and 0.01 µm) for each synthetic receptor.

In.[a]	R[b]	IC50[c] [µm]	In.[a]	R[b]	IC50[c] [µm]
P1		<0.1	P9	TCPP(Asp)4	<10
P2		<0.1	C10		<10
P3		<0.1	C11		<100
P4		<1	C12		<100
P5		<10	C13		–
P6		–	C14		–
P7		–	O15–17		–
P8		–	O18		–

^[a]Inhibitor;

^[b]modifying groups;

^[c]concentration [µm] that led to more than 50% inhibition of the SCF*–KIT interaction.