Papaverine
| Papaverine | |
|---|---|
| Salts [] | |
|---|---|
| Papaverine hydrochloride | |
| Papaverine sulfate | |
| Molecular structure via molpic based on CDK |
| Physical properties [] | |
|---|---|
| Molecular mass | 339.4 g/mol [1] |
| Density | 1.337 g/cu cm at 20 °C g/cm3 [1] |
| Appearance | White prisms from alcohol-diethyl ether; needles from petroleum ether [1] |
| Melting point | 147.5 °C [1] |
| Boiling point | Sublimes at 135 °C [1] |
| Decomposition | When heated to decomposition it emits toxic fumes of /oxides of nitrogen/. [1] |
| Solubility | In water, 3.733X10-5 mg/L at 37.5 °C [1] |
| Predicted LogP | 3.9 [1] |
| Structural Identifiers [] | |
|---|---|
| Molecular formula | C20H21NO4 [1] |
| IUPAC name | 1-[(3,4-dimethoxyphenyl)methyl]-6,7-dimethoxyisoquinoline [1] |
| SMILES | COC1=C(C=C(C=C1)CC2=NC=CC3=CC(=C(C=C32)OC)OC)OC [1] |
| InChI | 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] |
| InChIKey | XQYZDYMELSJDRZ-UHFFFAOYSA-N [1] |
| Pharmacokinetics[] | |
|---|---|
| Elimination half-life | 1.5 – 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
Chemistry
Salts []
Papaverine is typically found in the form of its hydrochloride and sulfate salts.
Stereochemistry []
Papaverine is a achiral mixture.
Pharmacology
ATC Classification
In the alimentary tract and metabolism (A) papaverine acts In the genito urinary system and sex hormones (G) papaverine actsMetabolism
Subjective effects []
Legal status []
- Australia: Papaverine is a S4 substance.
- United States: Papaverine is a prescription only substance.
See also []
External links []
References []
National Center for Biotechnology Information. PubChem Compound Summary for CID 4680, papaverine. Accessed May 6, 2026. https://pubchem.ncbi.nlm.nih.gov/compound/4680
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