TABLE 5
Calculated lipophilicity of μ-opioid agonists
Compound
log P
Oxymorphone
0.62
Oxycodone
0.91
Morphine
1.07
Codeine
1.35
Hydromorphone
1.46
Hydrocodone
1.75
Heroin
1.88
Fentanyl
4.28
Methadone
4.77