Topological Polar Surface Area (TPSA)
TPSAThe sum of surfaces of polar atoms (oxygen, nitrogen, and attached hydrogens) in a molecule. Predicts drug transport: TPSA < 140 A^2 suggests oral absorption, TPSA < 90 A^2 suggests CNS penetration.
Contoh
- Aspirin TPSA ~63 A^2
- Metformin TPSA ~92 A^2
- TPSA threshold for BBB ~90 A^2
Tahukah Anda?
The sum of surfaces of polar atoms (oxygen, nitrogen, and attached hydrogens) in a molecule. Predicts drug transport: TPSA < 140 A^2 suggests oral absorption, TPSA < 90 A^2 suggests …