Metyrapone: C~14~H~14~N~2~O. Mw: 226.27. (1) 1-Propanone, 2-methyl-1,2-di-3-pyridinyl-; (2) 2-Methyl-1,2-di-3-pyridyl-1-propanone. CAS-54-36-4 (1963).
Metyrapone Tartrate: C~14~H~14~N~2~O 2C~4~H~6~O~6~. Mw: 526.45. (1) 1-Propanone, 2-methyl-1,2-di-3-pyridinyl-, [R-(R*,R*)]-2,3-dihydroxybutanedioate (1:2). CAS-908-35-0 (1966).