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Details

Stereochemistry ACHIRAL
Molecular Formula C15H21NO2
Molecular Weight 247.3327
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of KETOBEMIDONE

SMILES

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

InChI

InChIKey=ALFGKMXHOUSVAD-UHFFFAOYSA-N
InChI=1S/C15H21NO2/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

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

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 18:18:29 GMT 2025
Edited
by admin
on Mon Mar 31 18:18:29 GMT 2025
Record UNII
PQS1L514CF
Record Status Validated (UNII)
Record Version
  • Download
Name Type Language
IDS-NK-001
Preferred Name English
KETOBEMIDONE
INN   MI   WHO-DD  
INN  
Official Name English
IDS-NK-001(SECT.3)
Code English
1-(4-(M-HYDROXYPHENYL)-1-METHYL-4-PIPERIDYL)-1-PROPANONE
Systematic Name English
CETOBEMIDONE
Common Name English
KETOBEMIDONE [MI]
Common Name English
Ketobemidone [WHO-DD]
Common Name English
A 21 LUNDBECK
Common Name English
4-(M-HYDROXYPHENYL)-1-METHYL-4-PROPIONYLPIPERIDINE
Systematic Name English
NSC-117863
Code English
ketobemidone [INN]
Common Name English
CLIRADONE
Common Name English
CIBA 7115
Common Name English
Classification Tree Code System Code
WHO-VATC QN02AG02
Created by admin on Mon Mar 31 18:18:29 GMT 2025 , Edited by admin on Mon Mar 31 18:18:29 GMT 2025
WHO-VATC QN02AB01
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WHO-ATC N02AG02
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WHO-ATC N02AB01
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DEA NO. 9628
Created by admin on Mon Mar 31 18:18:29 GMT 2025 , Edited by admin on Mon Mar 31 18:18:29 GMT 2025
NCI_THESAURUS C67413
Created by admin on Mon Mar 31 18:18:29 GMT 2025 , Edited by admin on Mon Mar 31 18:18:29 GMT 2025
Code System Code Type Description
NSC
117863
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PRIMARY
INN
1274
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PRIMARY
MESH
C012394
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PRIMARY
FDA UNII
PQS1L514CF
Created by admin on Mon Mar 31 18:18:29 GMT 2025 , Edited by admin on Mon Mar 31 18:18:29 GMT 2025
PRIMARY
EVMPD
SUB08370MIG
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PRIMARY
EPA CompTox
DTXSID00196977
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PRIMARY
DRUG BANK
DB06738
Created by admin on Mon Mar 31 18:18:29 GMT 2025 , Edited by admin on Mon Mar 31 18:18:29 GMT 2025
PRIMARY
WIKIPEDIA
KETOBEMIDONE
Created by admin on Mon Mar 31 18:18:29 GMT 2025 , Edited by admin on Mon Mar 31 18:18:29 GMT 2025
PRIMARY
DRUG CENTRAL
1526
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PRIMARY
SMS_ID
100000083095
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PRIMARY
CAS
469-79-4
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PRIMARY
NCI_THESAURUS
C80583
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PRIMARY
MERCK INDEX
m6618
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PRIMARY Merck Index
PUBCHEM
10101
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PRIMARY
ECHA (EC/EINECS)
207-421-0
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PRIMARY
ChEMBL
CHEMBL47072
Created by admin on Mon Mar 31 18:18:29 GMT 2025 , Edited by admin on Mon Mar 31 18:18:29 GMT 2025
PRIMARY
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