Moclobemide

Moclobemide Basic information
Product Name:Moclobemide
Synonyms:moclbemide;4-CHLORO-N[2-(4-MORPHOLINYL)ETHYL]-BENZAMIDE (MOCLOBEMIDE);Ro-11-1163, Aurorix, Manerix, Moclamine, p-Chloro-N-(2-morpholinoethyl)benzamide;MODOBEMDE;p-Chlor-N-(2-morpholinoethyl)benzamid;4-Chloro-(2-(4-morpholinyl)ethyl)benzamide;Moclobemide (base and/or unspecified salts);4-Chloro-N-[2-(4-morpholinyl)ethyl]benzamide, Aurorix, Moclamine
CAS:71320-77-9
MF:C13H17ClN2O2
MW:268.74
EINECS:629-727-7
Product Categories:API's;All Inhibitors;Inhibitors;Intermediates & Fine Chemicals;Pharmaceuticals;Other APIs;Active Pharmaceutical Ingredients;Monoamine Oxidase
Mol File:71320-77-9.mol
Moclobemide Structure
Moclobemide Chemical Properties
Melting point 137°C
Boiling point 447.7±40.0 °C(Predicted)
density 1.206±0.06 g/cm3(Predicted)
storage temp. room temp
solubility DMSO: >20mg/mL
form solid
pka14.26±0.46(Predicted)
color white
Merck 14,6226
CAS DataBase Reference71320-77-9(CAS DataBase Reference)
NIST Chemistry ReferenceMoclobemide(71320-77-9)
Safety Information
Hazard Codes Xn,T+
Risk Statements 22-37/38-41-26/27/28
Safety Statements 26-39-45-36/37/39-22
RIDADR 3249
WGK Germany 2
RTECS CV2462000
HazardClass 6.1(b)
PackingGroup III
HS Code 29349990
Hazardous Substances Data71320-77-9(Hazardous Substances Data)
ToxicityLD50 in rats (mg/kg): 707 orally (Burkard, Wyss)
MSDS Information
ProviderLanguage
Aurorix English
Moclobemide Usage And Synthesis
DescriptionMoclobemide is the first of a new generation of non-hydrazine, reversible MAO-A inhibitors useful in the treatment of depression. Moclobemide is a selective inhibitor of MAO-A, allowing tyramine to be metabolized by MAO-B. In controlled studies, moclobemide was clinically superior to desipramine and showed no cholinergic or cardiovascular side-effects. A metabolite is currently under investigation for treatment of Parkinson’s disease,.
DescriptionMoclobemide (Item No. 24361) is an analytical reference standard categorized as an antidepressant. This product is intended for research and forensic applications.
Chemical PropertiesWhite to Off-White Solid
OriginatorHoffmann-LaRoche (Switzerland)
UsesA reversible monoamine oxidase inhibitor.
UsesAntidepressant;Mono amine oxidase inhibitor (Type A)
DefinitionChEBI: A member of the class of benzamides that is benzamide substituted by a chloro group at position 4 and a 2-(morpholin-4-yl)ethyl group at the nitrogen atom. It acts as a reversible monoamine oxidase inhibitor and is used in the treatment of depression.
Brand nameAurorix
Biochem/physiol ActionsMoclobemide is a reversible monoamine oxidase A inhibitor (MAOI); antidepressant. Elimination half-life in humans = 1 -3 hrs; absolute oral bioavailability. Unlike other MAO inhibitors, does not significantly increase blood pressure in humans upon combination with tyramine.
Mechanism of actionMoclobemide is an RIMA that preferentially inhibits MAO-A (~80%) and, to a lesser extent, MAO-B (20–30% inhibition), thereby increasing the concentration of 5-HT, NE, and other catecholamines in the synaptic cleft and in storage sites. During chronic therapy with the MAOIs, adaptive changes at the noradrenergic and serotonergic receptors occur (“downregulation”) as a result of neurotransmitter hypersensitivity because of prolonged concentrations of NE and 5-HT at the postsynaptic receptor. This mechanism is likely the basis for its antidepressant activity. Inhibition of MAO-A by moclobemide is short-acting (maximum, 24 hours) and reversible. This is in contrast to phenelzine, which is nonselective, long-acting, and irreversible in its binding to MAO-A and MAO-B.
The pharmacokinetics for moclobemide are linear only up to 200 mg; at higher doses, nonlinear pharmacokinetics are observed. Although well absorbed from the GI tract, the presence of food reduces the rate but not the extent of absorption of moclobemide. Small quantities of moclobemide are distributed into human breast milk. Moclobemide undergoes a complex metabolism, initially involving morpholine carbon and nitrogen oxidation, deamination, and aromatic hydroxylation. The N-oxide and ring-opened metabolites retain some in vitro MAO-A inhibition. Moclobemide is a weak inhibitor of CYP2D6 in vitro. It is extensively metabolized in the liver by oxidation and is eliminated primarily into the urine as conjugates. Less than 1% of an administered dose of moclobemide is eliminated unmetabolized.
Because moclobemide is partially metabolized by the polymorphic isozymes CYP2C19 and CYP2D6, plasma concentrations of moclobenmide may be affected in patients who are poor metabolizers. In patients who are slow metabolizers, the AUC for moclobemide was 1.5 times greater than the AUC in patients who are extensive metabolizers and receiving the same dose. This increase is within the normal range of variation (up to twofold) typically seen in patients.

Clinical UseReversible MAOI:
Depression
Social phobia

Drug interactionsDrug interactions for the RIMAs include interaction with SSRI antidepressants, which can cause the 5-HT syndrome. The effect of stimulant drugs, such as methylphenidate and dextroamphetamine (used to treat ADHD), may be increased. Some over-the-counter cold and hay fever decongestants (i.e., sympathomimetic amines) can have increased stimulant effects. Selegiline, a selective MAO-B used for Parkinson's disease, should not be used concurrently with the RIMAs. Unlike the irreversible MAOIs, no significant interactions with foods occur, because the selective inhibition of MAO-A does not stop the metabolism of tyramine. The RIMAs must not be taken concurrently with a nonreversible MAOI.
MetabolismMoclobemide is extensively metabolised in the liver, partly by the cytochrome P450 isoenzymes CYP2C19 and CYP2D6. Metabolites of moclobemide and a small amount of unchanged drug are excreted in the urine
storageRoom temperature
references[1] pisani l, barletta m, soto-otero r, nicolotti o, mendez-alvarez e, catto m, introcaso a, stefanachi a, cellamare s, altomare c, carotti a. discovery, biological evaluation, and structure-activity and -selectivity relationships of 6'-substituted (e)-2-(benzofuran-3(2h)-ylidene)-n-methylacetamides, a novel class of potent and selective monoamine oxidase inhibitors. j med chem. 2013 mar 28;56(6):2651-64.
[2] nair np, ahmed sk, kin nm. biochemistry and pharmacology of reversible inhibitors of mao-a agents: focus on moclobemide. j psychiatry neurosci. 1993 nov;18(5):214-25.
ISOCARBOXAZID (200 MG) Trazodone Paroxetine Citalopram Entacapone Olanzapine Minoxidil Paroxetine hydrochloride Penfluridol Chlorantraniliprole Moclobemide 4-t-Butylbenzamide Difluorochloromethane Benzamide p-Aminobenzamide (2,4-DICHLOROPHENYL)-N-(2-MORPHOLIN-4-YLETHYL)FORMAMIDE AURORA 16306

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