SPL Set ID: 1b7897b4-7681-4b99-8883-d5dc33f86c01

Metyrosine is (–)-α-methyl- L -tyrosine or (α-MPT). It has the following structural formula: Metyrosine USP is a white to off-white, crystalline compound of molecular weight 195.22. It is very slightly soluble in water, acetone, and methanol, and insoluble in chloroform and benzene. It is soluble in acidic aqueous solutions. It is also soluble in alkaline aqueous solutions but is subject to oxidative degradation under these conditions. Metyrosine is supplied as capsules for oral administration. Each capsule contains 250 mg metyrosine, USP. Inactive ingredients are colloidal silicon dioxide, FD&C Blue # 2, gelatin, hydroxypropyl cellulose, low substituted hydroxypropyl cellulose, magnesium stearate and titanium dioxide. Each capsule is imprinted with black pharmaceutical ink which contains: black iron oxide, potassium hydroxide and shellac. Meets USP Dissolution Test 2. structural formula