Table 4.
Caco-2 bidirectional permeability analysis for compounds 9 and 19.
| Test compound | Assay Duration (minutes) | Mean A→B Papp (10−6 cm/sec) | Mean B→A Papp (10−6 cm/sec) | Efflux ratio (Papp(B→A)/(Papp(A→B) | P-gp substrate | Notes | 
|---|---|---|---|---|---|---|
| Colchicine | 60 | 0.13 | 5.54 | 44.30 | ||
| Ranitidine | 60 | 0.27 | 1.71 | 6.30 | Yes | Poor-permeability control | 
| Labetolol | 60 | 8.81 | 35.05 | Yes | Moderate-permeability control | |
| Propranolol | 60 | 24.99 | 42.44 | 1.70 | No | High-permeability control | 
| 9 | 60 | 0.05 | 0.35 | 69 | Yes | Low permeability | 
| 19 | 60 | 0.13 | 0.13 | 0.96 | No | Low permeability |