Oripavine

Oripavine
Names
	IUPAC name 6,7,8,14-Tetradehydro-4,5α-epoxy-6-methoxy-17-methylmorphinan-3-ol
	Other names 3-O-desmethylthebaine
Identifiers
CAS Number	467-04-9 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:7782 ;
ChEMBL	ChEMBL437602 ;
ChemSpider	4575366 ;
ECHA InfoCard	100.006.715
EC Number	207-385-6;
KEGG	C06175 ;
MeSH	Oripavine
PubChem CID	5462306;
UNII	575AOU51CR ;
CompTox Dashboard (EPA)	DTXSID10196908 ;
	InChI InChI=1S/C18H19NO3/c1-19-8-7-18-11-4-6-14(21-2)17(18)22-16-13(20)5-3-10(15(16)18)9-12(11)19/h3-6,12,17,20H,7-9H2,1-2H3/t12-,17+,18+/m1/s1 Key: ZKLXUUYLEHCAMF-UUWFMWQGSA-N ; InChI=1S/C18H19NO3/c1-19-8-7-18-11-4-6-14(21-2)17(18)22-16-13(20)5-3-10(15(16)18)9-12(11)19/h3-6,12,17,20H,7-9H2,1-2H3/t12-,17+,18+/m1/s1 Key: ZKLXUUYLEHCAMF-UUWFMWQGBL; Key: ZKLXUUYLEHCAMF-UUWFMWQGSA-N;
	SMILES OC1=C(O[C@H]2C(OC)=CC=C3[C@@]42CCN5C)C4=C(C[C@H]35)C=C1;
Properties
Chemical formula	C18H19NO3
Molar mass	297.348 g/mol
Pharmacology
ATC code	N02A (WHO)
Routes of; administration	SC
Legal status	BR: Class A1 (Narcotic drugs); US: Schedule II;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Oripavine is an opioid and the major metabolite of thebaine. It is the precursor to the semi-synthetic compounds etorphine and buprenorphine. Although this chemical compound has analgesic potency comparable to morphine, it is not used clinically due to severe adverse effects and a low therapeutic index. Being a precursor to a series of extremely strong opioids, oripavine is a controlled substance in some jurisdictions.