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M105

Sigma-Aldrich

Methoctramine hydrate

≥97% (NMR), solid

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Synonym(s):
Methoctramine tetrahydrochloride hydrate, N,N′-bis[6-[[(2-Methoxyphenyl)methyl]amino]hexyl]-1,8-octane diamine tetrahydrochloride hydrate
Empirical Formula (Hill Notation):
C36H62N4O2 · 4HCl · xH2O
CAS Number:
104807-46-7
Molecular Weight:
728.75 (anhydrous basis)
MDL number:
MFCD11045942
UNSPSC Code:
12352116
PubChem Substance ID:
24277850
NACRES:
NA.32

Quality Level

100

Assay

≥97% (NMR)

form

solid

color

white

solubility

H2O: >20 mg/mL

storage temp.

2-8°C

SMILES string

O.Cl.Cl.Cl.Cl.COc1ccccc1CNCCCCCCNCCCCCCCCNCCCCCCNCc2ccccc2OC.COc3ccccc3CNCCCCCCNCCCCCCCCNCCCCCCNCc4ccccc4OC

InChI

1S/2C36H62N4O2.4ClH.H2O/c2*1-41-35-23-13-11-21-33(35)31-39-29-19-9-7-17-27-37-25-15-5-3-4-6-16-26-38-28-18-8-10-20-30-40-32-34-22-12-14-24-36(34)42-2;;;;;/h2*11-14,21-24,37-40H,3-10,15-20,25-32H2,1-2H3;4*1H;1H2

InChI key

XIIINYPADNNZHA-UHFFFAOYSA-N

Gene Information

human ... CHRM2(1129)

General description

Methoctramine (N, N′-bis [6-[[(2-methoxyphenyl)-methyl] hexyl]-1, 8-octane] diamine) is a derivative of polymethylene tetramine.

Application

Methoctramine hydrate has been used:
  • As a muscarinic receptor 2 antogonist.
  • As a test molecule to check its effect on premature osteogenic differentiation of HGPS (Hutchinson-Gilford progeria syndrome) iPS (induced pluripotent)-derived mesenchymal stem cells.

Biochem/physiol Actions

Methoctramine is a selective M2 muscarinic receptor antagonist at nM concentrations. At mM concentrations, methoctramine directly inhibits the high affinity GTPase activity of G proteins. The increase in calcium and arachidonic acid release were attenuated by the M2 receptor antagonist methoctramine, but not by the M3 receptor antagonist p-fluoro-hexahydro siladifenidol.
Methoctramine is a selective M2 muscarinic receptor antagonist at nM concentrations. At mM concentrations, methoctramine directly inhibits the high affinity GTPase activity of G proteins. In oesophageal muscle, acetylcholine-mediated increase in calcium and arachidonic acid release were reduced by the M2 receptor antagonist, methoctramine. Methoctramine infused bilaterally in the dorsolateral striatum, considerably enhanced memory in cognitively impaired aged rats. Methoctramine plays a vital role in muscarinic receptor classification.

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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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L Daeffler et al.
British journal of pharmacology, 127(4), 1021-1029 (1999-08-05)
1. The effects of spermine and methoctramine, a selective M2 muscarinic receptor antagonist, were studied on the high-affinity GTPase activity of G proteins, and on ligand binding to M2 muscarinic receptors in pig heart sarcolemma. 2. The spontaneous GTP hydrolysis
Intrastriatal infusions of methoctramine improve memory in cognitively impaired aged rats.
Lazaris A
Neurobiology of Aging, 24(2), 379-383 (2003)
Presynaptic Muscarinic Acetylcholine Receptors and TrkB Receptor Cooperate in the Elimination of Redundant Motor Nerve Terminals during Development.
Nadal L
Frontiers in Aging Neuroscience, 9, 24-24 (2017)
Maddalena Zini et al.
Chemico-biological interactions, 181(3), 409-416 (2009-07-07)
Methoctramine and its analogues are polymethylene tetramines that selectively bind to a variety of receptor sites. Although these compounds are widely used as pharmacological tools for receptor characterization, the toxicological properties of these polyamine-based structures are largely unknown. We have
A High Throughput Phenotypic Screening reveals compounds that counteract premature osteogenic differentiation of HGPS iPS-derived mesenchymal stem cells.
Lo Cicero A
Scientific Reports, 6:34798 (2016)
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