U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS

Details

Stereochemistry ACHIRAL
Molecular Formula C15H21NO2.ClH
Molecular Weight 283.794
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of KETOBEMIDONE HYDROCHLORIDE

SMILES

Cl.CCC(=O)C1(CCN(C)CC1)C2=CC(O)=CC=C2

InChI

InChIKey=HYDFAZFVKRXNJX-UHFFFAOYSA-N
InChI=1S/C15H21NO2.ClH/c1-3-14(18)15(7-9-16(2)10-8-15)12-5-4-6-13(17)11-12;/h4-6,11,17H,3,7-10H2,1-2H3;1H

HIDE SMILES / InChI

Molecular Formula C15H21NO2
Molecular Weight 247.3327
Charge 0
Count
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

Molecular Formula ClH
Molecular Weight 36.461
Charge 0
Count
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

Ketobemidone (Cliradon, Ketogan, Ketodur, Cymidon) is a strong opioid analgesic, structurally related to pethidine, which has been in clinical use for more than 50 years. In the Scandinavian countries ketobemidone is only available in combination with a spasmolytic substance N,N-dimethyl-3,3-diphenyl-I-methylallylamine (A29). Ketobemidone has been shown to be a non-competitive N-methyl-D-aspartate (NMDA) receptor antagonist. In spite of a relatively low mu-receptor affinity ketobemidone has a higher analgesic potency than morphine by systemic administration. It is probably due to its higher lipophilicity and consequently more easy penetration into the CNS. Ketobemidone is indicated for the treatment of all types of severe pain, such as postoperative, cancer, kidney stones and fractures.

Approval Year

PubMed

PubMed

TitleDatePubMed
Determination of 19 drugs of abuse and metabolites in whole blood by high-performance liquid chromatography-tandem mass spectrometry.
2010-04
Pharmacokinetics after an intravenous single dose of the opioid ketobemidone in children.
2010-04
In vivo investigation of brain and systemic ketobemidone metabolism.
2010-02
Intraabdominal local anaesthetics for postoperative pain relief following abdominal hysterectomy: a randomized, double-blind, dose-finding study.
2009-05
Opioids and efflux transporters. Part 3: P-glycoprotein substrate activity of 3-hydroxyl addition to meperidine analogs.
2008-06-15
Simultaneous analysis of five antidepressant drugs using direct injection of biofluids in a capillary restricted-access media-liquid chromatography-tandem mass spectrometry system.
2008-05-02
Method development for identification of ketobemidone metabolites in microdialysate samples by coupled-column capillary liquid chromatography-tandem mass spectrometry.
2008-05-02
Preoperative sub-Tenon's capsule injection of ropivacaine in conjunction with general anesthesia in retinal detachment surgery.
2007-11
Gabapentin and postoperative pain: a qualitative and quantitative systematic review, with focus on procedure.
2007-07-07
Laparoscopic occlusion compared with embolization of uterine vessels: a randomized controlled trial.
2007-01
Performance of four mixed-mode solid-phase extraction columns applied to basic drugs in urine.
2007
The effect of gabapentin on post-operative pain following tonsillectomy in adults.
2006-08
Fracture risk associated with the use of morphine and opiates.
2006-07
[The use of analgesics in Denmark, 2000-2004].
2006-05-15
Postoperative continuous intrathecal pain treatment in children after selective dorsal rhizotomy with bupivacaine and two different morphine doses.
2006-04
Ketobemidone is a substrate for cytochrome P4502C9 and 3A4, but not for P-glycoprotein.
2005-08
Intravenous acetaminophen reduced the use of opioids compared with oral administration after coronary artery bypass grafting.
2005-06
Comparison of the analgesic efficacy of ketobemidone and morphine for management of postoperative pain in children: a randomized, controlled study.
2004-11
Postoperative pain after abdominal hysterectomy: a double-blind comparison between placebo and local anesthetic infused intraperitoneally.
2004-10
Stability of drugs in stored postmortem femoral blood and vitreous humor.
2004-07
Fatal intoxications in a Swedish forensic autopsy material during 1992-2002.
2004-06-30
Ibuprofen vs. acetaminophen vs. ibuprofen and acetaminophen after arthroscopically assisted anterior cruciate ligament reconstruction.
2004-06
Similar pain scores after early and late extubation in heart surgery with cardiopulmonary bypass.
2004-02
Laparoscopic occlusion of uterine vessels for the treatment of symptomatic fibroids: Initial experience and comparison to uterine artery embolization.
2004-01
Validation of a method for quantification of ketobemidone in human plasma with liquid chromatography-tandem mass spectrometry.
2003-06-15
Wound infiltration with ropivacaine and fentanyl: effects on postoperative pain and PONV after breast surgery.
2003-03
N-(trifluoromethyl)benzyl substituted N-normetazocines and N-norketobemidones.
2003-01-02
The pharmacokinetics of ketobemidone in critically ill patients.
2002-12
Postoperative pain relief using intermittent injections of 0.5% ropivacaine through a catheter after laparoscopic cholecystectomy.
2002-08
Effects of clonidine on postoperative nausea and vomiting in breast cancer surgery.
2002-05
Identification of glucuronide conjugates of ketobemidone and its phase I metabolites in human urine utilizing accurate mass and tandem time-of-flight mass spectrometry.
2002-04
The pharmacokinetics of ketobemidone are not affected by CYP2D6 or CYP2C19 phenotype.
2002-02
Identification of phase I and phase II metabolites of ketobemidone in patient urine using liquid chromatography-electrospray tandem mass spectrometry.
2001-11-05
Perioperative hypothermia and postoperative opioid requirements.
2001-10
Determination of ketobemidone and its metabolites in plasma and urine using solid-phase extraction and liquid chromatography-mass spectrometry.
2001-08
Improved recovery after music and therapeutic suggestions during general anaesthesia: a double-blind randomised controlled trial.
2001-08
Disappearance of morphine-induced hyperalgesia after discontinuing or substituting morphine with other opioid agonists.
1994-11
Quantitative determination of the urinary excretion of ketobemidone and four of its metabolites after intravenous and oral administration in man.
1981-07-01
Clinical pharmacokinetics of ketobemidone. Its bioavailability after rectal administration.
1981-02
Comparison of opioid agonists in maintaining responding and in suppressing morphine withdrawal in rhesus monkeys.
1981
Patents

Patents

Sample Use Guides

In Vivo Use Guide
Curator's Comment: The most commonly cited equalisation ratio for analgesic doses is 25 mg of ketobemidone hydrobromide to 60 mg of morphine hydrochloride or sulfate and circa 8 mg of ketobemidone by injection. https://www.drugbank.ca/drugs/DB06738
Oral Light 5mg Common 5-10mg Strong 10-15mg.
Route of Administration: Oral
In Vitro Use Guide
Curator's Comment: Affinities of ketobemidone and morphine for Mu, Delta and Kappa opioid receptors in bovine caudate nucleus were determined.
The affinity of ketobemidone to the mu-receptor is significantly lower than that of morphine considering Ki values of 5.5 and 2.4 nM respectively. At the delta-binding site the two opioids have equal affinity (Ki values 143 versus 136 nM), whereas ketobemidone has much lower affinity than morphine to the kappa-receptor (Ki 599 versus 130 nM).
Substance Class Chemical
Created
by admin
on Mon Mar 31 18:53:51 GMT 2025
Edited
by admin
on Mon Mar 31 18:53:51 GMT 2025
Record UNII
U9U6LTV80K
Record Status Validated (UNII)
Record Version
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Name Type Language
HOECHST 10720
Preferred Name English
KETOBEMIDONE HYDROCHLORIDE
EP   MART.   MI   WHO-DD  
Common Name English
KETOBEMIDONE HYDROCHLORIDE [MART.]
Common Name English
1-(4-(3-HYDROXYPHENYL)-1-METHYL-4-PIPERIDINYL)-1-PROPANONE HYDROCHLORIDE
Systematic Name English
KETODUR
Common Name English
WIN-1539
Code English
Ketobemidone hydrochloride [WHO-DD]
Common Name English
KETOBEMIDONE HYDROCHLORIDE [MI]
Common Name English
KETOBEMIDONE HYDROCHLORIDE [EP MONOGRAPH]
Common Name English
KETOBEMIDONE HCL
Common Name English
CYMIDON
Common Name English
Classification Tree Code System Code
NCI_THESAURUS C67413
Created by admin on Mon Mar 31 18:53:51 GMT 2025 , Edited by admin on Mon Mar 31 18:53:51 GMT 2025
Code System Code Type Description
NCI_THESAURUS
C101535
Created by admin on Mon Mar 31 18:53:51 GMT 2025 , Edited by admin on Mon Mar 31 18:53:51 GMT 2025
PRIMARY
PUBCHEM
80069
Created by admin on Mon Mar 31 18:53:51 GMT 2025 , Edited by admin on Mon Mar 31 18:53:51 GMT 2025
PRIMARY
EVMPD
SUB02832MIG
Created by admin on Mon Mar 31 18:53:51 GMT 2025 , Edited by admin on Mon Mar 31 18:53:51 GMT 2025
PRIMARY
MERCK INDEX
m6618
Created by admin on Mon Mar 31 18:53:51 GMT 2025 , Edited by admin on Mon Mar 31 18:53:51 GMT 2025
PRIMARY Merck Index
ECHA (EC/EINECS)
227-749-8
Created by admin on Mon Mar 31 18:53:51 GMT 2025 , Edited by admin on Mon Mar 31 18:53:51 GMT 2025
PRIMARY
DRUG BANK
DBSALT000189
Created by admin on Mon Mar 31 18:53:51 GMT 2025 , Edited by admin on Mon Mar 31 18:53:51 GMT 2025
PRIMARY
MESH
C012394
Created by admin on Mon Mar 31 18:53:51 GMT 2025 , Edited by admin on Mon Mar 31 18:53:51 GMT 2025
PRIMARY
FDA UNII
U9U6LTV80K
Created by admin on Mon Mar 31 18:53:51 GMT 2025 , Edited by admin on Mon Mar 31 18:53:51 GMT 2025
PRIMARY
SMS_ID
100000086442
Created by admin on Mon Mar 31 18:53:51 GMT 2025 , Edited by admin on Mon Mar 31 18:53:51 GMT 2025
PRIMARY
CAS
5965-49-1
Created by admin on Mon Mar 31 18:53:51 GMT 2025 , Edited by admin on Mon Mar 31 18:53:51 GMT 2025
PRIMARY
EPA CompTox
DTXSID00208327
Created by admin on Mon Mar 31 18:53:51 GMT 2025 , Edited by admin on Mon Mar 31 18:53:51 GMT 2025
PRIMARY
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