nalbuphine   Click here for help

GtoPdb Ligand ID: 1663

Synonyms: Nubain®
Approved drug
nalbuphine is an approved drug (FDA (1979))
Compound class: Synthetic organic
Comment: Nalbuphine is a semi-synthetic opioid drug that acts as a full agonist at the κ opioid receptor and a partial agonist at μ and δ opioid receptors. It is chemically related to the opioid antagonists, naloxone and naltrexone, and the potent opioid analgesic, oxymorphone.
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2D Structure
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Physico-chemical Properties
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Hydrogen bond acceptors 3
Hydrogen bond donors 3
Rotatable bonds 2
Topological polar surface area 73.16
Molecular weight 357.19
XLogP 1.14
No. Lipinski's rules broken 0
SMILES / InChI / InChIKey
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Canonical SMILES OC1CCC2(C34C1Oc1c4c(CC2N(CC3)CC2CCC2)ccc1O)O
Isomeric SMILES O[C@H]1CC[C@@]2([C@@]34[C@H]1Oc1c4c(C[C@H]2N(CC3)CC2CCC2)ccc1O)O
InChI InChI=1S/C21H27NO4/c23-14-5-4-13-10-16-21(25)7-6-15(24)19-20(21,17(13)18(14)26-19)8-9-22(16)11-12-2-1-3-12/h4-5,12,15-16,19,23-25H,1-3,6-11H2/t15-,16+,19-,20-,21+/m0/s1
InChI Key NETZHAKZCGBWSS-CEDHKZHLSA-N
Selectivity at GPCRs
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Target Sp. Type Action Value Parameter Concentration range (M) Reference
μ receptor Primary target of this compound Hs Agonist Partial agonist 8.8 pKi - 1
pKi 8.8 (Ki 1.6x10-9 M) [1]
κ receptor Primary target of this compound Hs Agonist Full agonist 7.4 – 7.5 pKi - 3
pKi 7.4 – 7.5 [3]
δ receptor Primary target of this compound Hs Agonist Partial agonist 6.2 pKi - 1
pKi 6.2 (Ki 5.8x10-7 M) [1]
κ receptor Mm Agonist Full agonist 7.4 pIC50 - 2
pIC50 7.4 [2]