Table 1.

The parallel artificial membrane permeability assay (PAMPA).^[a]

Compound	Permeability	−log P e	Compound	Permeability	−log P e
	[nm s−1]			[nm s−1]
II	7.6	5.12	II′	12	4.96
III	<0.01		III′	10	4.99
IV	6.0	5.22	IV′	13	4.90

[a] Permeability was measured at pH 7.4 and at room temperature, the value is reported as an average of quadruplicates.