Diacetyldihydromorphine


Diacetyldihydromorphine
Systematic (IUPAC) name
(5α,6α)-7,8-Dihydro-4,5-epoxy-17-methylmorphinan-3,6-diacetate
Identifiers
CAS number	509-71-7
ATC code	?
PubChem	5359460
Chemical data
Formula	C₂₁H₂₅N O₅
Mol. mass	371.427 g/mol
Synonyms	Diacetyldihydromorphine, Paralaudin, Dihydroheroin
Pharmacokinetic data
Bioavailability	?
Metabolism	?
Half life	?
Excretion	?
Therapeutic considerations
Pregnancy cat.	?
Legal status	Schedule I(US)
Routes	Intravenous

Diacetyldihydromorphine (Paralaudin, Dihydroheroin) is a potent opiate derivative developed in Germany in 1929 which is rarely used in some countries for the treatment of severe pain such as that caused by terminal cancer, as a more potent form of diamorphine (Heroin). Paralaudin is fast acting and longer lasting than diamorphine (heroin), with a duration of action of around 4-7 hours.

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Diacetyldihydromorphine is quickly metabolised by plasma esterase enzymes into dihydromorphine, in the same way that diacetylmorphine (heroin) is metabolised into morphine; however unlike dihydromorphine, which is more potent than morphine as an analgesic, diacetyldihydromorphine is actually less potent than diamorphine, perhaps because it is metabolised more slowly. Diacetyldihydromorphine is approximately equipotent to morphine whereas diamorphine is twice the potency of morphine.^[1] It shares with other opioids the risk of overdose or (potentially life-threatening) respiratory depression. When strong opioids are required it is more common to use better known drugs such as nicomorphine, oxymorphone or fentanyl which doctors will be more familiar with, and which do not share the stigma associated with heroin. Side effects are similar to those of other opiates and include itching, nausea and constipation.

References

^ http://jpet.aspetjournals.org/cgi/content/abstract/133/3/388

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Opioids

Opiate derivatives

6-Methyldihydromorphine • 6-Methylenedihydrodesoxymorphine • 14-Methoxymetopon • Acetylcodeine • Acetyldihydrocodeine • Acetyldihydrocodeinone • Acetylmorphone • Benzylmorphine • β-4-morpholinylethylmorphine • Codeine • Codeine-N-Oxide • Codeinone • Codoxime • Desomorphine • Diacetyldihydromorphine • Dihydrocodeine • Dihydrocodeinone enol acetate • Dihydrohydroxycodeinone • Dihydrodesoxymorphine • Dihydroheroin • Dihydroisocodeine • Dihydromorphine • Dipropanoylmorphine • Ethylmorphine • Heroin (Diamorphine) • Heterocodeine • Hydrocodone • Hydromorphinol • Hydromorphone • Laudanum • Methyldesorphine • Methyldihydromorphine • Methylnaltrexone • Metopon • Monoacetylmorphine • Morphine-N-Oxide • Morphine • Morphinone • Morphine-6-glucuronide • Myrophine • Nalbuphine • Nalmefene • Nalorphine • Naloxone • Naltrexone • Naltrindole • Nicocodeine • Nicodicodeine • Nicomorphine • Norcodeine • Normorphine • Omnopon • Opium • Oripavine • Oxycodone • Oxymorphone • Pantopon • Papaveretum • Paregoric • Pholcodeine • Pseudomorphine • Poppy Straw • Poppy Tea • Semorphone • Tetrapon • Thebacon • Thebaine

Morphinans

Butorphanol • Cyclorphan • Dextro-3-hydroxy-N-allylmorphinan • Dextrorphan • Drotebanol • Levargorphan • Levallorphan • Levorphanol • Levorphan • Levophenacylmorphan • Levomethorphan • Norlevorphanol • Oxilorphan • Phenomorphan • Racemethorphan • Racemorphan

Benzomorphans

Bremazocine • Cyclazocine • Dezocine • Ethylketocyclazocine • Ketazocine • Metazocine • Pentazocine • Phenazocine

4-Phenylpiperidines

Pethidines (Meperidines)	Anileridine • Benzethidine • Carperidine • Difenoxin • Diphenoxylate • Etoxeridine (Carbetidine) • Furethidine • Hydroxypethidine (Bemidone) • Morpheridine • Oxpheneridine (Carbamethidine) • Pethidine (Meperidine) • Pethidine Intermediate A • Pethidine Intermediate B (Norpethidine) • Pethidine Intermediate C (Pethidinic Acid) • Pheneridine • Phenoperidine • Piminodine • Properidine (Ipropethidine) • Sameridine • WIN-7681
Prodines	Allylprodine • α-meprodine • α-prodine • β-meprodine • β-prodine • Meprodine • MPPP • PEPAP • Prodine • Prosidol • Trimeperidine
Ketobemidones	Acetoxyketobemidone • Ketobemidone • Methylketobemidone • Propylketobemidone
Others	Alvimopan • Loperamide • Picenadol

Open Chain Opioids

Amidones	Dextromethadone • Dipipanone • Isomethadone • Levomethadone • Methadone • Methadone Intermediate • Norpipanone • Phenadoxone (Heptazone) • Pipidone
Methadols	Acetylmethadol • α-methadol • α-acetylmethadol • β-methadol • β-acetylmethadol • Dimepheptanol • Levo-α-acetylmethadol • Noracymethadol
Moramides	Dextromoramide • Levomoramide • Moramide Intermediate • Racemoramide
Thiambutenes	Diethylthiambutene • Dimethylthiambutene • Ethylmethylthiambutene
Phenalkoxams	Dextropropoxyphene • Dimenoxadol • Dioxaphetyl Butyrate • Levopropoxyphene • Propoxyphene
Ampromides	Diampromide • Phenampromide • Propiram
Others	Lefetamine