What is Methysergide maleate(CAS No:129-49-7)?

What is Methysergide maleate(CAS No:129-49-7)?

M.Wt:469.54
Formula:C21H27N3O2.C4H4O4
Solubility:Soluble to 10 mM in water with gentle warming
Purity:>99 %
Storage:Store at RT
CAS No:129-49-7
Methysergide maleate is an ergot derivative that is a congener of LYSERGIC ACID DIETHYLAMIDE. It antagonizes the effects of serotonin in blood vessels and gastrointestinal smooth muscle, but has few of the properties of other ergot alkaloids. Methysergide is used prophylactically in migraine and other vascular headaches and to antagonize serotonin in the carcinoid syndrome.