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[Differentiation of 3,5-dioxo-1,2-diphenyl-4-n-butyl-pyrazolidine (phenylbutazone) and 3,5-dioxo-1,2-diphenyl-4-prenyl-pyrazolidine (prenazone) using reaction chromatography]
[Differentiation of 3,5-dioxo-1,2-diphenyl-4-n-butyl-pyrazolidine (phenylbutazone) and 3,5-dioxo-1,2-diphenyl-4-prenyl-pyrazolidine (prenazone) using reaction chromatography]