Asenapine

Asenapine Basic information
Product Name:Asenapine
Synonyms:trans-5-chloro-2,3,3a,12b-tetrahydro-2-methyl-1H-dibenz[2,3:6,7]oxepino[4,5-c]pyrrole;Asenapine;(3aR,12bR)-rel-5-Chloro-2,3,3a,12b-tetrahydro-2-methyl-1H-dibenz[2,3:6,7]oxepino[4,5-c]pyrrole;1H-Dibenz(2,3:6,7)oxepino(4,5-C)pyrrole, 5-chloro-2,3,3A,12B-tetrahydro-2-methyl-, (3ar,12br)-rel-;1H-Dibenz(2,3:6,7)oxepino(4,5-C)pyrrole, 5-chloro-2,3,3A,12B-tetrahydro-2-methyl-, trans-;Asenapine [inn:ban];Einecs 265-829-4;Unii-jkz19V908o
CAS:65576-45-6
MF:C17H16ClNO
MW:285.772
EINECS:2658294
Product Categories:Aromatics;Heterocycles;Intermediates & Fine Chemicals;Pharmaceuticals
Mol File:65576-45-6.mol
Asenapine Structure
Asenapine Chemical Properties
Boiling point 357.9±42.0 °C(Predicted)
density 1.231
storage temp. Store at +4°C
solubility DMSO:50.0(Max Conc. mg/mL);174.97(Max Conc. mM)
form A solid
pka9.50±0.20(Predicted)
Safety Information
Hazardous Substances Data65576-45-6(Hazardous Substances Data)
MSDS Information
Asenapine Usage And Synthesis
Description(±)-Asenapine is an atypical antipsychotic. It binds to dopamine D1-4, α-adrenergic, and histamine receptors (Kis = 0.42-1.45, 0.32-1.26, and 1-6.17 nM, respectively), as well as the serotonin (5-HT) receptor subtypes 5-HT1A, 5-HT1B, 5-HT2A, 5-HT2B, 5-HT2C, 5-HT5A, 5-HT6, and 5-HT7 (Kis = 0.03-3.98 nM). (±)-Asenapine inhibits the suppression of neuron firing induced by the 5-HT2A, dopamine D2, and α2-adrenergic receptor agonists 2,5-dimethoxy-4-iodoamphetamine (DOI), apomorphine, and clonidine , respectively, in rat brain (ED50s = 75, 40, and 85 μg/kg, respectively). In vivo, (±)-asenapine (0.05-0.2 mg/kg, s.c.) increases extracellular dopamine levels in the medial prefrontal cortex (mPFC), nucleus accumbens (NAc), and lateral striatum and suppresses the conditioned avoidance response in rats. It prevents acute and chronic phencyclidine-induced deficits in cued reversal learning in rats when administered at a dose of 0.075 mg/kg. Formulations containing asenapine have been used in the treatment of schizophrenia and bipolar I disorder.
Chemical PropertiesYellow Oil
UsesCombined serotonin (5HT2) and dopamine (D2) receptor antagonist; structurally related to Mianserin. Antipsychotic
DefinitionChEBI: (R,R)-asenapine is a 5-chloro-2-methyl-2,3,3a,12b-tetrahydrodibenzo[2,3:6,7]oxepino[4,5-c]pyrrole in which both of the stereocentres have R configuration. It is a conjugate base of a (R,R)-asenapine(1+). It is an enantiomer of a (S,S)-asenapine.
Biological ActivityNovel psychopharmacologic agent. Displays antagonist activity at 5-HT, dopamine, noradrenalin and histamine receptor subtypes (pK i values are 8.60, 8.40, 10.15, 9.75, 10.46, 8.84, 9.60, 9.94, 8.85, 8.90, 8.84, 9.38, 8.95, 8.93, 8.9, 9.49, 8.91, 9.00 and 8.21 for 5-HT 1A , 5-HT 1B , 5-HT 2A , 5-HT 2B , 5-HT 2C , 5-HT 5A , 5-HT 6 , 5-HT 7 , D 1 , D 2L , D 2S , D 3 , D 4 , α 1A , α 2A , α 2B , α 2C , H 1 and H 2 receptors respectively). Displays no appreciable affinity for muscarinic receptors. Exhibits potent activity in animal models predictive of antipsychotic efficacy.
Clinical UseAtypical antipsychotic
Treatment of schizophrenia and bipolar disease
Enzyme inhibitorThis atypical antipsychotic agent (FW = 285.77 g/mol; CAS 65576-45-6), marketed under the trade names Saphris ?, and also known as Org 5222 and (3aRS,12bRS)-rel-5-chloro-2,3,3a,12b-tetrahydro-2-methyl-1H-dibenz[2,3: 6,7]-oxepino-[4,5-c]pyrrole, is multi-receptor antagonist with the following spectrum of binding interactions: serotonin 5-HT1A receptor, Ki = 2.5 nM; serotonin 5-HT1B receptor, Ki = 4.0 nM; serotonin 5-HT2A receptor, Ki = 0.06 nM; serotonin 5-HT2B receptor, Ki = 0.16 nM; serotonin 5-HT2C receptor, Ki = 0.03 nM; serotonin 5-HT5A receptor, Ki = 1.6 nM; serotonin 5-HT6 receptor, Ki = 1.5 nM; serotonin 5-HT7 receptor, Ki = 0.13 nM; a1- Adrenergic receptor, Ki = 1.2 nM; a2A-Adrenergic receptor, Ki = 1.2 nM; a2B-Adrenergic receptor, Ki = 0.25 nM; a2C-Adrenergic receptor, Ki = 1.2 nM; dopamine D1-receptor, Ki = 1.4 nM; dopamine D2-receptor, Ki = 1.3 nM; dopamine D3-receptor, Ki = 0.4 nM; dopamine D4-receptor, Ki = 1.1 nM; histamine H1-receptor, Ki = 1.0 nM; and histamine H2-receptor, Ki = 6 nM. Like other atypical antipsychotic drugs, asenapine preferentially enhances dopamine and acetylcholine efflux in the rat medial prefrontal cortex and hippocampus. See Reference-x for asenapine’s UV, IR, NMR, and mass spectra as well as X-ray analysis, thermal properties, solubilities and partition coefficient.
Drug interactionsPotentially hazardous interactions with other drugs
Anaesthetics: enhanced hypotensive effect.
Analgesics: increased risk of convulsions with tramadol; enhanced hypotensive and sedative effects with opioids.
Anti-arrhythmics: increased risk of ventricular arrhythmias with anti-arrhythmics that prolong the QT interval; avoid with amiodarone, disopyramide and procainamide (risk of ventricular arrhythmias).
Antidepressants: concentration possibly increased by fluvoxamine; possibly increased paroxetine concentration; concentration of tricyclics possibly increased.
Antiepileptics: antagonises anticonvulsant effect.
Antimalarials: avoid with artemether/lumefantrine.
Antivirals: concentration possibly increased by ritonavir.
Anxiolytics and hypnotics: increased sedative effects.







MetabolismMetabolism is by direct glucuronidation by UGT1A4 and oxidative metabolism by cytochrome P450 isoenzymes (predominantly CYP1A2) are the primary metabolic pathways for asenapine.
Excretion is 50% renal and 50% via the faeces.
Asenapine impurity A Asenapine-N-beta-D-glucuronide Paricalcitol 5-Chloro-2-methyl-2,3-dihydrodibenzo[2,3:6,7]oxepino[4,5-c]pyrrole-(2H)-one N-DesMethyl Asenapine-d4 Asenapine related impurities Saphris hydrochloride Asenapine Maleate 1H-Dibenz[2,3:6,7]oxepino[4,5-c]pyrrol-1-one, 11-chloro-2,3,3a,12b-tetrahydro-2-Methyl-, (3aR,12bS)-rel- ILOPERIDONE (3aS,12bS)-2-Methyl-2,3,3a,12b-tetrahydro-1H-dibenzo[2,3:6,7]oxepino[4,5-c]pyrrole Entacapone (3aR,12bR)-rel-5-Chloro-2,3,3a,12b-tetrahydro-2-methyl-1H-dibenz[2,3:6,7]oxepino[4,5-c]pyrrol-1-one Reaxys ID: 3623864 Asenapine N-Oxide SGWOPWVMYXQVHJ-UHFFFAOYSA-N Asenapine (R)-3-PHENYL-PYRROLIDINE HYDROCHLORIDE

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