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M2824

Sigma-Aldrich

Meptazinol hydrochloride

Synonym(s):

3-(3-ethylhexahydro-1-methyl-1H-azepin-3-yl)-phenol hydrochloride, IL-22811 hydrochloride, WY-22811 hydrochloride

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About This Item

Empirical Formula (Hill Notation):
C15H23NO· HCl
CAS Number:
59263-76-2
Molecular Weight:
269.81
EC Number:
261-683-0
MDL number:
MFCD00941476
UNSPSC Code:
12352200
PubChem Substance ID:
329817952
NACRES:
NA.77

Assay

≥98% (HPLC)

form

powder

color

white to off-white

solubility

H2O: >10 mg/mL

originator

Wyeth

SMILES string

Cl.CCC1(CCCCN(C)C1)c2cccc(O)c2

InChI

1S/C15H23NO.ClH/c1-3-15(9-4-5-10-16(2)12-15)13-7-6-8-14(17)11-13;/h6-8,11,17H,3-5,9-10,12H2,1-2H3;1H

InChI key

MPJUSISYVXABBH-UHFFFAOYSA-N

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Biochem/physiol Actions

Meptazinol entered the human pharmaceutical market as a racemic mixture in the 1980s for use as an analgesic. Its pharmacology is not completely understood; however, its analgesic properties are mostly due to its partial agonism at the mu1 opioid receptor. Due to its partial agonism, Meptazinol antagonizes morphine dependence in vivo. Its advantage over other opiates is its reduced capacity to cause addition and respiratory depression, also due to its intrinsic activity as a partial agonist. Meptazinol has been found to have additional activity as an acetylcholinesterase (AChE) inhibitor, particularly in its (-) enantiomeric form, which may partially explain its analgesic properties. AChE inhibitors are used to treat Alzheimer′s disease, providing additional interest in this compound.

Features and Benefits

This compound is featured on the Opioid Receptors page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.
This compound was developed by Wyeth. To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302

Precautionary Statements

P264 - P270 - P301 + P312 - P501

Hazard Classifications

Acute Tox. 4 Oral

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Zhen-qi Shi et al.
Yao xue xue bao = Acta pharmaceutica Sinica, 40(8), 754-757 (2005-11-05)
To investigate the extent of systemic absorption and uptake of meptazinol (MEP) hydrochloride in cerebrospinal fluid (CSF) after intranasal administration on rats and compare with oral administration. CSF samples were collected by a serial sampling method. The concentration of MEP
A Galli et al.
The Journal of pharmacy and pharmacology, 43(5), 366-369 (1991-05-01)
The protective action of meptazinol against acute di-isopropyl fluorophosphate (DFP) intoxication has been evaluated in mice by measuring the effects on the DFP LD50 of the pretreatment of the animals with increasing doses of the drug. Meptazinol at the doses
Jian Qiao et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 877(30), 3787-3791 (2009-10-13)
A robust and validated liquid chromatography-tandem mass spectrometry (LC-MS/MS) method with positive electrospray ionization (ESI) was developed for the determination of hydrochloride meptazinol in human plasma. After liquid-liquid extraction of 200mul of human plasma, HPLC separation was achieved on a
A Schnabel et al.
Der Anaesthesist, 60(11), 995-1001 (2011-09-16)
Epidural regional analgesia is still recommended as the gold standard for obstetric analgesia due to its high efficacy and less depressing effects to the central nervous system. However, if absolute or relative contraindications for a regional anesthetic technique are present
Qiong Xie et al.
Journal of molecular modeling, 12(4), 390-397 (2006-01-13)
Molecular docking has been performed to investigate the binding mode of (-)-meptazinol (MEP) with acetylcholinesterase (AChE) and to screen bis-meptazinol (bis-MEP) derivatives for preferable synthetic candidates virtually. A reliable and practical docking method for investigation of AChE ligands was established
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