McN-A 343

Modify Date: 2026-07-01 07:38:01

McN-A 343 Structure
McN-A 343 structure
Common Name McN-A 343
CAS Number 55-45-8 Molecular Weight 317.21100
Density N/A Boiling Point N/A
Molecular Formula C14H18Cl2N2O2 Melting Point N/A
MSDS Chinese USA Flash Point N/A

 Use of McN-A 343


McN-A-343 is a selective M1 muscarinic agonist that stimulates muscarinic transmission in sympathetic ganglia. McN-A-343 reduces inflammation and oxidative stress in an experimental model of ulcerative colitis[1][2].

 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride
Synonym More Synonyms

 McN-A 343 Biological Activity

This table contains bioactivity, target information and biological‑assay experimental data of this compound.

Description McN-A-343 is a selective M1 muscarinic agonist that stimulates muscarinic transmission in sympathetic ganglia. McN-A-343 reduces inflammation and oxidative stress in an experimental model of ulcerative colitis[1][2].
Related Catalog
References

[1]. Koss MC, et al. Analysis of miosis produced by McN-A-343 in anesthetized cats. J Ocul Pharmacol Ther. 1995;11(3):389-399.

[2]. Magalhães DA, Batista JA, Sousa SG, et al. McN-A-343, a muscarinic agonist, reduces inflammation and oxidative stress in an experimental model of ulcerative colitis. Life Sci. 2021;272:119194.

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Molecular Formula C14H18Cl2N2O2
Molecular Weight 317.21100
Exact Mass 316.07500
PSA 38.33000
InChIKey CXFZFEJJLNLOTA-UHFFFAOYSA-N
SMILES C[N+](C)(C)CC#CCOC(=O)Nc1cccc(Cl)c1.[Cl-]
Storage condition -20°C

 MSDS

This table provides MSDS information including hazard classification, first‑aid, fire‑fighting, spill handling, operation and storage instructions.

 Toxicological Information

This table summarizes toxicological test data, acute & chronic toxicity and ecological hazard parameters for this chemical.

CHEMICAL IDENTIFICATION

RTECS NUMBER :
BR0318000
CHEMICAL NAME :
Ammonium, (4-hydroxy-2-butynyl)trimethyl-, chloride, m-chlorocarbanilate
CAS REGISTRY NUMBER :
55-45-8
LAST UPDATED :
199009
DATA ITEMS CITED :
2
MOLECULAR FORMULA :
C14-H18-Cl-N2-O2.Cl
MOLECULAR WEIGHT :
317.24
WISWESSER LINE NOTATION :
GR CMVO2UU2K &G &12/15

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
34375 ug/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 13,307,1968
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
1174 ug/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
JMCMAR Journal of Medicinal Chemistry. (American Chemical Soc., Distribution Office Dept. 223, POB POB 57136, West End Stn., Washington, DC 20037) V.6- 1963- Volume(issue)/page/year: 33,281,1990

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Personal Protective Equipment Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Safety Phrases 24/25
RIDADR NONH for all modes of transport
RTECS BR0318000

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

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McN-A 343 Structure

McN-A 343

CAS#:55-45-8

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Literature: Hopkins,T.R. et al. Journal of Organic Chemistry, 1962 , vol. 27, p. 659 - 662

 Precursor & DownStream

This table lists upstream starting materials and downstream derivative products related to this chemical.

Precursor  2

DownStream  0

 Articles27

More Articles

This table lists relevant public references with title, journal and publication metadata for this compound.

Central muscarinic cholinergic activation alters interaction between splenic dendritic cell and CD4+CD25- T cells in experimental colitis.

PLoS ONE 9(10) , e109272, (2014)

The cholinergic anti-inflammatory pathway (CAP) is based on vagus nerve (VN) activity that regulates macrophage and dendritic cell responses in the spleen through alpha-7 nicotinic acetylcholine recep...

Functional activation of G-proteins coupled with muscarinic acetylcholine receptors in rat brain membranes.

J. Pharmacol. Sci. 125(2) , 157-68, (2014)

The functional activation of Gi/o proteins coupled to muscarinic acetylcholine receptors (mAChRs) was investigated with the conventional guanosine-5'-O-(3-[(35)S]thio) triphosphate ([(35)S]GTPγS) bind...

Investigating the interaction of McN-A-343 with the M2 muscarinic receptor using its nitrogen mustard derivative.

Biochem. Pharmacol. 79(7) , 1025-35, (2010)

We investigated whether the aziridinium ion formed from a nitrogen mustard derivative (4-[(2-bromoethyl)methyl-amino]-2-butynyl N-(3-chlorophenyl)carbamate; BR384) structurally related to McN-A-343 (4...

 McN-A 343Bioassay

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This table contains target information, in‑vitro & in‑vivo assay data for this compound.

Name: Luminescence-based cell-based primary high throughput screening assay to identify ago...
Source: The Scripps Research Institute Molecular Screening Center
Target: mu-type opioid receptor isoform MOR-1 [Homo sapiens]
External Id: OPRM1-OPRD1_AG_LUMI_1536_1X%ACT PRUN
Name: Inhibition of neurosphere proliferation of mouse neural precursor cells by MTT assay
Source: ChEMBL
Target: N/A
External Id: CHEMBL1266185
Name: Fluorescence-based cell-based primary high throughput screening assay to identify ago...
Source: The Scripps Research Institute Molecular Screening Center
Target: muscarinic acetylcholine receptor M1 [Homo sapiens]
External Id: CHRM1_AG_FLUO8_1536_1X%ACT PRUN
Name: In vivo determination of peripheral M2 receptor mediated hypothermia, cholinergic sid...
Source: ChEMBL
Target: Muscarinic acetylcholine receptor M2
External Id: CHEMBL750964
Name: In vivo determination of peripheral M2 receptor mediated tremor, cholinergic side eff...
Source: ChEMBL
Target: Muscarinic acetylcholine receptor M2
External Id: CHEMBL750967
Name: In vivo determination of peripheral M2 receptor mediated salivation, cholinergic side...
Source: ChEMBL
Target: Muscarinic acetylcholine receptor M2
External Id: CHEMBL750966
Name: Human M5 receptor (Acetylcholine receptors (muscarinic))
Source: IUPHAR-DB
Target: M5 receptor (Acetylcholine receptors (muscarinic)) [Homo sapiens]
External Id: 17_Human
Name: Primary Screen Inhibitors of CD40 Signaling in BL2 Cells Measured in Cell-Based Syste...
Source: Broad Institute
Target: N/A
External Id: 7124-01_Inhibitor_SinglePoint_HTS_Activity
Name: Dicer-mediated maturation of pre-microRNA
Source: Center for Chemical Genomics, University of Michigan
Target: N/A
External Id: TargetID_659_CEMA
Name: Fluorescence-based cell-based primary high throughput screening assay to identify pos...
Source: The Scripps Research Institute Molecular Screening Center
Target: muscarinic acetylcholine receptor M1 [Homo sapiens]
External Id: CHRM1_PAM_FLUO8_1536_1X%ACT PRUN
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 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

MCN A-343 chloride
McN-A-343
A 343

 McN-A 343 | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What are the upstream materials of 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride?
A: Related upstream materials(CAS) of 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride: 101-27-9;75-50-3.
Q: What is the InChIKey of 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride?
A: InChIKey of 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride is CXFZFEJJLNLOTA-UHFFFAOYSA-N.
Q: What is the molecular weight of 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride?
A: Molecular weight of 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride is 317.21100.
Q: What is the CAS number of 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride?
A: CAS number of 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride is 55-45-8.
Q: What are the uses of 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride?
A: Main uses of 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride: McN-A-343 is a selective M1 muscarinic agonist that stimulates muscarinic transmission in sympathetic ganglia. McN-A-343 reduces inflammation and oxidative stress in an experimental model of ulcerative colitis[1][2].
Q: What is the safety information for 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride?
A: Safety information for 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride: 24/25.
Q: What is the polar surface area (PSA) of 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride?
A: Polar surface area (PSA) of 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride is 38.33000.
Q: What are the storage conditions for 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride?
A: Storage conditions for 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride: -20°C.
Q: What is the English name of 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride?
A: The English name of 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride is 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride.
Q: What is the SMILES notation of 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride?
A: SMILES notation of 4-[(3-chlorophenyl)carbamoyloxy]but-2-ynyl-trimethylazanium,chloride is C[N+](C)(C)CC#CCOC(=O)Nc1cccc(Cl)c1.[Cl-].

 McN-A 343factory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
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