Mianserin hydrochloride  (Synonyms: Org GB 94)

Mianserin hydrochloride (Org GB 94) is a H1 receptor inverse agonist and is a psychoactive agent of the tetracyclic antidepressant.

Mianserin hydrochloride (Org GB 94) is a psychoactive drug of the tetracyclic antidepressant (TeCA) therapeutic family. It is classified as a noradrenergic and specific serotonergic antidepressant (NaSSA) and has antidepressant, anxiolytic (anti-anxiety), hypnotic (sedating), antiemetic (nausea and vomiting-attenuating), orexigenic (appetite-stimulating), and antihistamine effects. It is not approved for use in the US, but its analogue, mirtazapine, is. Mianserin was the first antidepressant to reach the UK market that was less dangerous than the tricyclic antidepressants in overdose. Mianserin is an antagonist/inverse agonist of the H1, 5-HT1D, 5-HT2A, 5-HT2B, 5-HT2C, 5-HT3, 5-HT6, 5-HT7, α1-adrenergic, and α2-adrenergic receptors, and also inhibits the reuptake of norepinephrine. As a high affinity H1 receptor inverse agonist, mianserin has strong antihistamine effects (sedation, weight gain, etc.). Contrarily, it has negligible affinity for the mACh receptors, and thus lacks any anticholinergic properties. It was recently found to be a potent kappa opioid receptor agonist. In addition, mianserin also appears to be a potent antagonist of the neuronal octopamine receptor. What implications this may have on mood are currently unknown, however octopamine has been implicated in the regulation of sleep, appetite and insulin production and therefore may theoretically contribute to the overall side effect profile of mianserin.

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

300.83

Solid

C₁₈H₂₁ClN₂

21535-47-7

CN(CC1)CC2N1C3=CC=CC=C3CC4=CC=CC=C24.Cl

Room temperature in continental US; may vary elsewhere.

4°C, sealed storage, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

• [1]. Olianas MC,et al. The atypical antidepressant mianserin exhibits agonist activity at κ-opioid receptors. Br J Pharmacol. 2012 Nov;167(6):1329-41.  [Content Brief]

  [2]. Roeder T. High-affinity antagonists of the locust neuronal octopamine receptor. Eur J Pharmacol. 1990 Nov 27;191(2):221-4.  [Content Brief]