AnodyneWiki

Papaverine

Papaverine
Papaverine
Salts
[]
Papaverine hydrochloride
Generated by the Chemistry Development Kit (http://github.com/cdk)
Papaverine sulfate
Generated by the Chemistry Development Kit (http://github.com/cdk)
Molecular structure via molpic based on CDK
Physical properties
[]
339.4 g/mol [1]
Density1.337 g/cu cm at 20 °C g/cm3 [1]
AppearanceWhite prisms from alcohol-diethyl ether; needles from petroleum ether [1]
Melting point147.5 °C [1]
Boiling pointSublimes at 135 °C [1]
DecompositionWhen heated to decomposition it emits toxic fumes of /oxides of nitrogen/. [1]
SolubilityIn water, 3.733X10-5 mg/L at 37.5 °C [1]
3.9 [1]
Structural Identifiers
[]
C20H21NO4 [1]
1-[(3,4-dimethoxyphenyl)methyl]-6,7-dimethoxyisoquinoline [1]
COC1=C(C=C(C=C1)CC2=NC=CC3=CC(=C(C=C32)OC)OC)OC [1]
InChI=1S/C20H21NO4/c1-22-17-6-5-13(10-18(17)23-2)9-16-15-12-20(25-4)19(24-3)11-14(15)7-8-21-16/h5-8,10-12H,9H2,1-4H3 [1]
InChIKeyXQYZDYMELSJDRZ-UHFFFAOYSA-N [1]
Pharmacokinetics[]
Elimination half-life1.5 – 2 hours

Papaverine (also known as Robaxapap, 1-(3,4-Dimethoxybenzyl)-6,7-dimethoxyisoquinoline, 6,7-Dimethoxy-1-veratrylisoquinoline, Pavacap, Papaverinum, Isoquinoline, 1-[(3,4-dimethoxyphenyl)methyl]-6,7-dimethoxy-, 1-((3,4-Dimethoxyphenyl)methyl)-6,7-dimethoxyisoquinoline, NSC-136630, Isoquinoline, 1-((3,4-dimethoxyphenyl)methyl)-6,7-dimethoxy- or Dtxsid4023418) is a substance of the phenol class.

Chemistry

Salts []

Papaverine is typically found in the form of its hydrochloride and sulfate salts.

 []

Papaverine is a achiral mixture.

Pharmacology

In the () papaverine acts In the () papaverine acts

Metabolism

Subjective effects []

 []

  • Australia: Papaverine is a S4 substance.
  • United States: Papaverine is a prescription only substance.

See also []

External links []

References []

  1. National Center for Biotechnology Information. PubChem Compound Summary for CID 4680, papaverine. Accessed May 6, 2026. https://pubchem.ncbi.nlm.nih.gov/compound/4680

  2. U.S. Food and Drug Administration; National Center for Advancing Translational Sciences. Papaverine. UNII: DAA13NKG2Q. Global Substance Registration System. Accessed May 6, 2026. https://gsrs.ncats.nih.gov/ginas/app/beta/substances/DAA13NKG2Q