Properties: Fine yellow needles from dilute methanol, yellow prisms from undiluted methanol, mp 317-325°. Fluoresces in dilute alcoholic soln. uv max (ethanol): 224, 238, 276, 287, 292, 314, 329, 375 nm (log e 4.39, 4.33, 4.70, 4.85, 4.83, 3.66, 3.80, 3.66). Soly in methanol, acetone, chloroform, carbon tetrachloride, carbon disulfide, tetrahydrofuran, dioxane less than 1%.
Melting point: mp 317-325°
Absorption maximum: uv max (ethanol): 224, 238, 276, 287, 292, 314, 329, 375 nm (log e 4.39, 4.33, 4.70, 4.85, 4.83, 3.66, 3.80, 3.66)
产品链接: 484-49-1››