[Determination of 3-(1'-phenylpropyl)-4-hydroxycoumarin by means of high-performance liquid chromatography (HPLC) (author's transl)].

Marcumar [3-(1-phenylpropyl)-4-hydroxycoumarin] was determined by means of high-performance liquid chromatography from serum extracts after the oral application of its sodium salt solution. 4-Hydroxycoumarin was used as the internal standard and rats were used as the test animals. Furthermore mixtures containing anticoagulants and anti-epileptics were also analysed with the help of high-performance liquid chromatography.