Methylergometrine maleate_product_DataBase

Bioactivity	Methylergometrine maleate (Methylergonovine maleate) is an ergot alkaloid and an active metabolite of Methysergide with vasoconstrictive and uterotonic activity. Methylergometrine maleate is a potent, selective and orally active 5-HT receptors antagonist with a pA2 value of 9.6. Methylergometrine maleate has antimigraine and dopaminergic activity. Methylergometrine maleate can used for the prevention and control of postpartum hemorrhage[1][2][3].
Invitro	Both Methysergide and Methylergometrine displace the concentration-response curve of 5-HT to the right and depressed the maximum effect ; thus, both agents behaved as non-competitive antagonists of 5-HT. Methylergometrine is approximately 40-times more potent than Methysergide as an antagonist of the 5-HT-induced responses, since the calculated apparent pA2 values are 9.6 and 8.0, respectively[3].
In Vivo	Methylergometrine is more potent than Methysergide as a vasoconstrictor on bovine middle cerebral artery and human coronary arteries, an effect on 5-HT1B receptors. Subacute oral administration would result in metabolism of Methysergide to Methylergometrine[2].
Name	Methylergometrine maleate
CAS	57432-61-8
Formula	C24H29N3O6
Molar Mass	455.50
Appearance	Solid
Transport	Room temperature in continental US; may vary elsewhere.
Storage	4°C, sealed storage, away from moisture *In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
Reference	[1]. Meneghetti F, et al. Crystallographic and NMR Investigation of Ergometrine and Methylergometrine, Two Alkaloids from Claviceps purpurea. Molecules. 2020 Jan 14;25(2). pii: E331. [2]. Koehler PJ, et al. History of methysergide in migraine. Cephalalgia. 2008 Nov;28(11):1126-35. [3]. Tfelt-Hansen P, et al. Methylergometrine antagonizes 5 HT in the temporal artery. Eur J Clin Pharmacol. 1987;33(1):77-9.

PeptideDB

Methylergometrine maleate

CAS: 57432-61-8 F: C24H29N3O6 W: 455.50