What Is Ergotamine Tartrate?

Colorless crystal, or off-white crystalline powder; odorless. Take a small amount of this product, place it on a glass slide, add 1 drop of concentrated hydrogen peroxide solution, 0.1 ml of dilute acetic acid and 0.2 ml of potassium acetate test solution, and observe under a microscope to see colorless crystalline precipitation. Pharmacological effects: Anti-migraine drugs.