Benzylmorphine

Benzylmorphine (Peronine) is a semi-synthetic opioid narcotic introduced to the international market in 1896 and that of the United States very shortly thereafter. It is much like codeine, containing a benzyl group attached to the morphine molecule just as the methyl group creates codeine and the ethyl group creates ethylmorphine or dionine (used as a generic name for that drug just as peronine is for benzylmorphine). It is about 90% as strong as codeine by weight.

Benzylmorphine

Clinical data
Other names	Benzylmorphine, Peronine, 3-Benzyloxy- 4,5α-epoxy- 17-methyl- 7-morphinen-6α-ol
ATC code	none
Legal status
Legal status	CA: Schedule I DE: Anlage I (Authorized scientific use only) US: Schedule I UN: Narcotic Schedule I
Identifiers
IUPAC name (5α,6α)-3-(benzyloxy)-17-methyl-7,8-didehydro-4,5-epoxymorphinan-6-ol
CAS Number	14297-87-1 Y
PubChem CID	5362507
DrugBank	DB01573 Y
ChemSpider	4515062 Y
UNII	83C78V3OL9
CompTox Dashboard (EPA)	DTXSID30162246
ECHA InfoCard	100.034.739
Chemical and physical data
Formula	C24H25NO3
Molar mass	375.468 g·mol−1
3D model (JSmol)	Interactive image
SMILES O[C@H]2\C=C/[C@H]6[C@@H]5N(CC[C@@]61c4c(O[C@H]12)c(OCc3ccccc3)ccc4C5)C
InChI InChI=1S/C24H25NO3/c1-25-12-11-24-17-8-9-19(26)23(24)28-22-20(27-14-15-5-3-2-4-6-15)10-7-16(21(22)24)13-18(17)25/h2-10,17-19,23,26H,11-14H2,1H3/t17-,18+,19-,23-,24-/m0/s1 Y Key:RDJGWRFTDZZXSM-RNWLQCGYSA-N Y
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This drug, the benzyl ether of morphine, should not be confused with dibenzoylmorphine, an ester of morphine comparable to heroin. Another morphine ether developed around the same time, benzyldihydromorphine, saw some clinical use in the opening years of the 20th Century. The ethers of morphine and codeine as well as dihydromorphine and dihydrocodeine number close to 100[1] and include such obscure opioids as formylallopseudoisocodeine.

Benzylmorphine is used in much the same way as codeine and ethylmorphine, primarily as a moderate strength analgesic, for eye surgery as a 1 to 2% solution, and as a cough suppressant. It was available in the United States prior to 1914 and was still used until the 1960s, but fell into disuse once alternative opiate derivatives became preferred by doctors (i.e. hydrocodone as an analgesic and codeine as a cough suppressant) Benzylmorphine is now a Schedule I Controlled Substance in the US and is regulated internationally under UN drug conventions.[2]

Benzylmorphine is an active metabolite of the opioid analgesic myrophine, formed in the liver. It has a metabolic fate similar to that of codeine.

Benzylmorphine is used as the hydrochloride (free base conversion ratio 0.91) and methylsulphonate (0.80) and has a US DEA Administrative Controlled Substance Control Number of 9052.