Pharmacokinetics and stability Flashcards
1
Q
What are the three most common types of chemical degradation?
A
1) Hydrolysis
2) Oxidation
3) Photolysis
2
Q
Henderson hasselbalch acid
A
pH = pKa + log [A-]/[HA]
3
Q
Henderson hasselbalch base
A
pH = pKa - log [NH4+]/[NH3]
4
Q
Log p
A
LogP = Log [oil]/[water]
5
Q
LogD
A
LogD = [unionised in oil]/[unionised in water + ionised in water]
6
Q
Clearance
A
Clearance = rate of elimination/concentration of plasma
7
Q
Ln conc/time graph
A
LnCt = -KelimT + LnC0
8
Q
Kelim
A
Gradient