PENTAZOCINE

Details

Stereochemistry	RACEMIC
Molecular Formula	C19H27NO
Molecular Weight	285.4238
Optical Activity	( + / - )
Defined Stereocenters	3 / 3
E/Z Centers	0
Charge	0

SHOW SMILES / InChI

Structure Search

SMILES

C[C@H]1[C@H]2CC3=CC=C(O)C=C3[C@]1(C)CCN2CC=C(C)C

InChI

InChIKey=VOKSWYLNZZRQPF-GDIGMMSISA-N

InChI=1S/C19H27NO/c1-13(2)7-9-20-10-8-19(4)14(3)18(20)11-15-5-6-16(21)12-17(15)19/h5-7,12,14,18,21H,8-11H2,1-4H3/t14-,18+,19+/m0/s1

HIDE SMILES / InChI

Molecular Formula	C19H27NO
Molecular Weight	285.4238
Charge	0
Count

Stereochemistry	ABSOLUTE
Additional Stereochemistry	No
Defined Stereocenters	3 / 3
E/Z Centers	0
Optical Activity	UNSPECIFIED

Description
Sources: https://www.drugs.com/cdi/pentazocine.html | https://www.ncbi.nlm.nih.gov/pubmed/23370666
Curator's Comment: description was created based on several sources, including https://www.ncbi.nlm.nih.gov/pubmed/12379919 | https://www.accessdata.fda.gov/drugsatfda_docs/label/2016/016194s079s080lbl.pdf | https://www.drugbank.ca/drugs/DB00652

Pentazocine is a synthetically prepared prototypical mixed agonist-antagonist narcotic (opioid analgesic) drug of the benzomorphan class of opioids used to treat moderate to moderately severe pain. Pentazocine is sold under several brand names, such as Fortral, Sosegon, Talwin NX. Pentazocine acts as an agonist of κ-opioid receptors and as an antagonist of μ-opioid receptors. This compound may exist as one of two enantiomers, named (+)-pentazocine and (−)-pentazocine. Side effects are similar to those of morphine, but pentazocine, due to its action at the kappa opioid receptor is more likely to invoke psychotomimetic effects. High dose may cause high blood pressure or high heart rate.

CNS Activity

Originator

Approval Year

Targets

Primary Target	Pharmacology	Condition	Potency
Mu opioid receptor 221 Target ID: CHEMBL233 Sources: https://www.ncbi.nlm.nih.gov/pubmed/2831363	Antagonist 2778		6.9 nM [Ki]
Kappa opioid receptor 108 Target ID: CHEMBL237 Sources: https://www.ncbi.nlm.nih.gov/pubmed/2831363	Agonist 2678		75.0 nM [Ki]

Conditions

Condition	Modality	Targets	Highest Phase	Product
Pain 614 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2016/016194s079s080lbl.pdf	Primary		Approved 8429	TALWIN Approved Use Pentazocine Hydrochloride and Naloxone Hydrochloride Tablets, USP is indicated for the relief of moderate to severe pain. Pentazocine Hydrochloride and Naloxone Hydrochloride Tablets, USP is indicated for oral use only. Launch Date 1967

C_max

Value	Dose	Co-administered	Analyte	Population
227 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/3709032/	80 mg single, intramuscular dose: 80 mg route of administration: Intramuscular experiment type: SINGLE co-administered:		PENTAZOCINE plasma	Homo sapiens population: HEALTHY age: ADULT sex: UNKNOWN food status: UNKNOWN
102 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/3709032/	40 mg single, intramuscular dose: 40 mg route of administration: Intramuscular experiment type: SINGLE co-administered:		PENTAZOCINE plasma	Homo sapiens population: HEALTHY age: ADULT sex: UNKNOWN food status: UNKNOWN

AUC

Value	Dose	Co-administered	Analyte	Population
1311 ng × h/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/3709032/	80 mg single, intramuscular dose: 80 mg route of administration: Intramuscular experiment type: SINGLE co-administered:		PENTAZOCINE plasma	Homo sapiens population: HEALTHY age: ADULT sex: UNKNOWN food status: UNKNOWN
536 ng × h/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/3709032/	40 mg single, intramuscular dose: 40 mg route of administration: Intramuscular experiment type: SINGLE co-administered:		PENTAZOCINE plasma	Homo sapiens population: HEALTHY age: ADULT sex: UNKNOWN food status: UNKNOWN

T_1/2

Value	Dose	Co-administered	Analyte	Population
5.3 h EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/3709032/	80 mg single, intramuscular dose: 80 mg route of administration: Intramuscular experiment type: SINGLE co-administered:		PENTAZOCINE plasma	Homo sapiens population: HEALTHY age: ADULT sex: UNKNOWN food status: UNKNOWN
4.6 h EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/3709032/	40 mg single, intramuscular dose: 40 mg route of administration: Intramuscular experiment type: SINGLE co-administered:		PENTAZOCINE plasma	Homo sapiens population: HEALTHY age: ADULT sex: UNKNOWN food status: UNKNOWN

Doses

Dose	Population	Adverse events
30 mg single, intramuscular Dose: 30 mg Route: intramuscular Route: single Dose: 30 mg Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/016194s081lbl.pdf	unhealthy Health Status: unhealthy Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/016194s081lbl.pdf	Disc. AE: Respiratory depression, Hypotension... AEs leading to discontinuation/dose reduction: Respiratory depression Hypotension (severe) Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/016194s081lbl.pdf
30 mg single, intramuscular Dose: 30 mg Route: intramuscular Route: single Dose: 30 mg Co-administed with:: benzodiazepines Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/016194s081lbl.pdf	unhealthy Health Status: unhealthy Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/016194s081lbl.pdf	Disc. AE: Sedation, Coma... AEs leading to discontinuation/dose reduction: Sedation Coma Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/016194s081lbl.pdf

AEs

AE	Significance	Dose	Population
Respiratory depression	Disc. AE	30 mg single, intramuscular Dose: 30 mg Route: intramuscular Route: single Dose: 30 mg Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/016194s081lbl.pdf	unhealthy Health Status: unhealthy Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/016194s081lbl.pdf
Hypotension	severe Disc. AE	30 mg single, intramuscular Dose: 30 mg Route: intramuscular Route: single Dose: 30 mg Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/016194s081lbl.pdf	unhealthy Health Status: unhealthy Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/016194s081lbl.pdf
Coma	Disc. AE	30 mg single, intramuscular Dose: 30 mg Route: intramuscular Route: single Dose: 30 mg Co-administed with:: benzodiazepines Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/016194s081lbl.pdf	unhealthy Health Status: unhealthy Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/016194s081lbl.pdf
Sedation	Disc. AE	30 mg single, intramuscular Dose: 30 mg Route: intramuscular Route: single Dose: 30 mg Co-administed with:: benzodiazepines Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/016194s081lbl.pdf	unhealthy Health Status: unhealthy Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/016194s081lbl.pdf

Overview

CYP3A4	CYP2C9	CYP2D6	hERG
substrate 1737			inhibitor 1612

OverviewOther

Other Inhibitor	Other Substrate	Other Inducer
Nav1.5 97	CYP1A2 1054 P-gp 1537

Drug as victim

Target	Modality	Activity
CYP1A2 1054	substrate 3367 Sources: https://pubmed.ncbi.nlm.nih.gov/17823102/ Page: 6.0	likely
CYP3A4 1737	substrate 3367 Sources: https://pubmed.ncbi.nlm.nih.gov/17823102/ Page: 6.0	likely
P-gp 1537	substrate 3367 Sources: https://europepmc.org/article/med/24915880#R34	yes

Tox targets

Target	Modality	Activity	Metabolite	Clinical evidence
Nav1.5 100	inhibitor 1626 Sources: https://pubmed.ncbi.nlm.nih.gov/19279232/ Page: 3.0
hERG 1647	inhibitor 1626 Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3151040/

Sourcing

Vendor/Aggregator	ID	URL
Chemieliva Pharmaceutical Co., Ltd	PBCM1405771
Compound Cloud	441277
Compound Cloud	441278
Compound Cloud	656697
Finetech	FT-0673607	http://www.finetechnology-ind.com/product/All%20product%20List/7488-49-5.html
MuseChem	I011222	https://www.musechem.com/product/I011222.html
NovoSeek	441278
Smolecule	S538980	http://www.smolecule.com/products/s538980
Smolecule	S538981	http://www.smolecule.com/products/s538981
THE BioTek	bt-278515	https://www.thebiotek.com/product/inhibitors/bt-278515
THE BioTek	bt-278516	https://www.thebiotek.com/product/inhibitors/bt-278516
Tetrahedron	TS54857
Yick-Vic Chemicals & Pharmaceuticals (HK) Ltd.	PH-0691A
ZINC	ZINC000000000596	http://zinc15.docking.org/substances/ZINC000000000596

PubMed

Title	Date	PubMed
Pentazocine-induced fibrous myopathy.	1975 Jan 20	1172732
Letter: Pentazocine-induced fibrous myopathy.	1975 Jun 16	1173609
Iatrogenic muscle fibrosis. Arm levitation as an initial sign.	1975 Nov 10	126328
Pentazocine addict nephropathy: a case report.	1992 Mar	1316215
WHO Expert Committee on Drug Dependence. Thirty-second report.	2001	11851193
Effects of AH-9700, (+)-pentazocine, DTG and oxybutynin on micturition in anesthetized rats with acetone-induced cystitis.	2001 Aug 24	11589509
Multiple pathways of sigma(1) receptor ligand uptakes into primary cultured neuronal cells.	2001 Aug 3	11672569
[Analysis of prehospital analgesia administered to victims with traumatic injuries].	2001 Jul-Aug	11586642
[Opioid tolerance and dependence--pharmacological aspects].	2001 Jul-Sep	12092171
[UV-densitometry determination of pentazocine hydrochloride in tablets after low temperature extraction].	2001 May-Jun	11548553
Modulation of serotonergic neurotransmission by short- and long-term treatments with sigma ligands.	2001 Oct	11588125
Potentiation of opioid analgesia in dopamine2 receptor knock-out mice: evidence for a tonically active anti-opioid system.	2001 Oct 1	11567069
Oxygen saturation in healthy newborn infants immediately after birth measured by pulse oximetry.	2002 Apr	12049291
Sigma(2)-receptor regulation of dopamine transporter via activation of protein kinase C.	2002 Apr	11907188
[The effect of ketamine on reducing postoperative agitation after sevoflurane anesthesia in pediatric strabismus surgery].	2002 Dec	12607270
[Biopharmaceutical studies on molecular mechanisms of membrane transport].	2002 Dec	12510384
[Sedation analgesia in interventional radiology].	2002 Feb	11898084
Pharmacological treatment of postoperative shivering: a quantitative systematic review of randomized controlled trials.	2002 Feb	11812718
Substance abuse monitoring by the Correctional Service of Canada.	2002 Feb	11805743
Binding of sigma receptor ligands and their effects on muscarine-induced Ca(2+) changes in SH-SY5Y cells.	2002 Feb 1	11834244
Fibromyositis after intramuscular pentazocine abuse.	2002 Jul-Sep	12432208
Synthesis of (+)-cis-N-(4-isothiocyanatobenzyl)-N-normetazocine, an isothiocyanate derivative of N-benzylnormetazocine as acylant agent for the sigma(1) receptor.	2002 Jun 6	12036376
Effects of adding midazolam on the postoperative epidural analgesia with two different doses of bupivacaine.	2002 Mar	11943519
Sigma1 receptor modulation of opioid analgesia in the mouse.	2002 Mar	11861817
Synthesis and evaluation of [18F]fluoroethyl SA4503 as a PET ligand for the sigma receptor.	2002 Mar 15	11835521
[Perioperative management for nephrectomy using combined spinal-epidural anesthesia with sedation in a patient with cerebral palsy under maintenance hemodialysis].	2002 Nov	12481458
Investigation of transport mechanism of pentazocine across the blood-brain barrier using the in situ rat brain perfusion technique.	2002 Nov	12379919
Antidiarrhoeal properties of a novel sigma ligand (JO 2871) on toxigenic diarrhoea in mice: mechanisms of action.	2002 Oct	12235074
Development and use of a computer program to detect potentially inappropriate prescribing in older adults residing in Canadian long-term care facilities.	2002 Oct 14	12379159
Effects of histamine and opioid systems on memory retention of passive avoidance learning in rats.	2002 Oct 4	12354569
Demographics, assessment and management of pain in the elderly.	2003	12513114
Differential effects of agonists on adenylyl cyclase superactivation mediated by the kappa opioid receptors: adenylyl cyclase superactivation is independent of agonist-induced phosphorylation, desensitization, internalization, and down-regulation.	2003 Dec	14557376
Sigma1 receptor agonist-mediated regulation of N-methyl-D-aspartate-stimulated [3H]dopamine release is dependent upon protein kinase C.	2003 Jan	12490613
Analgesic activity of Piper longum Linn. root.	2003 Jun	15266916
Role of kappa-opioid receptor activation in pharmacological preconditioning of swine.	2003 Jun	12543635
[Neurochemical analysis and pharmacological regulation of the corticofugal control of the nociceptive signals in the afferent pathways].	2003 Mar-Apr	12962044
Modulation of Fas receptor proteins and dynamin during opiate addiction and induction of opiate withdrawal in rat brain.	2003 Nov	14530904
Dose ratio is important in maximizing naloxone enhancement of nalbuphine analgesia in humans.	2003 Nov 6	14550900
Generation and phenotypic analysis of sigma receptor type I (sigma 1) knockout mice.	2003 Oct	14622179
[Combined use of intrathecal morphine and diclofenac suppository for postoperative analgesia after caesarean section].	2003 Oct	14598667
Antiproliferative and cytotoxic effects of some sigma2 agonists and sigma1 antagonists in tumour cell lines.	2004 Aug	15322732
Molecular modeling of sigma 1 receptor ligands: a model of binding conformational and electrostatic considerations.	2004 Jan	14629980
Pentazocine-induced cutaneous sclerosis and panniculitis in an Indian male.	2004 Jul	15230891
Sigma-2 receptors are specifically localized to lipid rafts in rat liver membranes.	2004 Jun 16	15189760
Experimental pain models reveal no sex differences in pentazocine analgesia in humans.	2004 May	15114226
Modulation of bradykinin-induced calcium changes in SH-SY5Y cells by neurosteroids and sigma receptor ligands via a shared mechanism.	2004 Nov	15352135
[Case report of pentazocine dependence from a standpoint of the cognitive therapy].	2004 Oct	15573677
Retroperitoneoscopic live donor nephrectomy: extended experience in a single center.	2004 Sep	15518698
Sex-related psychological predictors of baseline pain perception and analgesic responses to pentazocine.	2005 Apr	15740828
Using mixed agonist-antagonists.	2005 Feb	15706252

Patents

Sample Use Guides

In Vivo Use Guide

Initial dose: 30 mg by intramuscular, subcutaneous, or intravenous route. This may be repeated every 3 to 4 hours. Doses in excess of 30 mg intravenously or 60 mg intramuscularly or subcutaneously are not recommended. Maximum daily dose: 360 mg

Route of Administration: Other

In Vitro Use Guide

Cultured bovine adrenal medullary cells (1 × 10^6 / well) or SK-N-SH cells (0.3 × 10^6 / well) were preincubated with or without PTZ (Pentazocine) for the indicated times and further incubated at 37°C for another 12 min in KRH buffer containing 100 μM pargyline, 1 mM ascorbic acid, and [3H]NE (500 or 100 nM, respectively, 0.1 μCi) in the presence or absence of desipramine and PTZ. KRH buffer was composed of 154 mM NaCl, 5.6 mM KCl, 1.1 mM MgSO4, 2.2 mM CaCl2, 10 mM HEPES-Tris, and 10 mM glucose, adjusted to pH 7.4. After incubation, the cells were rapidly washed three times with 250 μl of ice-cold KRH buffer and solubilized in 500 μl of 10% Triton X-100. The radioactivity in the solubilized cells was counted with a liquid scintillation counter.

Substance Class	Chemical Created by `admin` on `Fri Dec 15 15:09:13 GMT 2023` Edited by `admin` on `Fri Dec 15 15:09:13 GMT 2023`
Record UNII	RP4A60D26L
Record Status	`Validated (UNII)`
Record Version

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Name

Type

Language

PENTAZOCINE

Official Name

English

(±)-PENTAZOCINE

Common Name

English

TALWIN

Brand Name

English

PENTAZOCINE [JAN]

Common Name

English

PENTAZOCINE [EP IMPURITY]

Common Name

English

PENTAZOCINE [HSDB]

Common Name

English

PENTAZOCINE [MART.]

Common Name

English

CIS-(±)-PENTAZOCINE

Common Name

English

NSC-107430

Code

English

WIN 20,228

Code

English

DL-PENTAZOCINE

Common Name

English

NIH-7958

Code

English

2,6-METHANO-3-BENZAZOCIN-8-OL, 1,2,3,4,5,6-HEXAHYDRO-6,11-DIMETHYL-3-(3-METHYL-2-BUTEN-1-YL)-, (2R,6R,11R)-REL-

Common Name

English

PENTAZOCINE [VANDF]

Common Name

English

pentazocine [INN]

Common Name

English

PENTAZOCINE CIV

Common Name

English

2,6-METHANO-3-BENZAZOCIN-8-OL, 1,2,3,4,5,6-HEXAHYDRO-6,11-DIMETHYL-3-(3-METHYL-2-BUTENYL)-, (2.ALPHA.,6.ALPHA.,11R*)-

Common Name

English

WIN-20228

Code

English

PENTAZOCINE CIV [USP-RS]

Common Name

English

Pentazocine [WHO-DD]

Common Name

English

(2R*,6R*,11R*)-1,2,3,4,5,6-HEXAHYDRO-6,11-DIMETHYL-3-(3-METHYL-2-BUTENYL)-2,6-METHANO-3-BENZAZOCIN-8-OL

Common Name

English

PENTAZOCINE [EP MONOGRAPH]

Common Name

English

PENTAZOCINE [USAN]

Common Name

English

PENTAZOCINE [MI]

Common Name

English

PENTAZOCINE [USP MONOGRAPH]

Common Name

English

Classification Tree Code System Code

NCI_THESAURUS

C67413