Acetyldihydrocodeine

Acetyldihydrocodeine

Clinical data
AHFS/Drugs.com	International Drug Names
ATC code	R05DA12 (WHO)
Legal status
Legal status	AU: S9 (Prohibited) CA: Schedule I DE: Anlage I (Controlled) UK: Class B US: Schedule I
Identifiers
IUPAC name 3-methoxy-6-acetoxy-(5α,6α)-7,8-Didehydro-4,5-epoxy-17-methylmorphinan
Synonyms	Acetyldihydrocodeine, Dihydrothebacone, 6-acetyl-7,8-dihydrocodeine
CAS Number	3861-72-1 N
PubChem (CID)	5463874
DrugBank	DB01538 Y
ChemSpider	4576412 N
UNII	SGY1T84P34 Y
ECHA InfoCard	100.021.253
Chemical and physical data
Formula	C20H25NO4
Molar mass	343.417 g/mol
3D model (Jmol)	Interactive image
SMILES O=C(O[C@@H]4[C@@H]5Oc1c2c(ccc1OC)C[C@H]3N(CC[C@]25[C@H]3CC4)C)C
InChI InChI=1S/C20H25NO4/c1-11(22)24-16-7-5-13-14-10-12-4-6-15(23-3)18-17(12)20(13,19(16)25-18)8-9-21(14)2/h4,6,13-14,16,19H,5,7-10H2,1-3H3/t13-,14+,16-,19-,20-/m0/s1 N Key:LGGDXXJAGWBUSL-BKRJIHRRSA-N N
NY (what is this?)

Acetyldihydrocodeine is an opiate derivative discovered in Germany in 1914 and was used as a cough suppressant and analgesic. It is not commonly used, but has activity similar to other opiates. Acetyldihydrocodeine is a very close relative derivative of Thebacon, where only the 6-7 double bond is unsaturated. Acetyldihydrocodeine can be described as the 6-acetyl derivative of dihydrocodeine and is metabolised in the liver by demethylation and deacetylation to produce dihydromorphine.

Since acetyldihydrocodeine has higher lipophilicity than codeine and is converted into dihydromorphine rather than morphine, it can be expected to be more potent and longer-lasting. It also has a higher bioavailability than codeine. Side effects are similar to those of other opiates and include itching, nausea and respiratory depression.

Although an opioid of low to moderate strength and use in medicine elsewhere in the world, acetyldihydrocodeine is a Schedule I controlled substance in the United States. Its DEA Administrative Controlled Substances Control Number is 9051 and the one salt in use, acetyldihydrocodeine hydrochloride, has a freebase conversion ratio of 0.90.