In the chloroform extract of the aerial parts of Ononis viscosa the three new compounds, (2'R,12'S)-6-(2,12-diacetoxy-tridecyl)-2,4-dihydroxybenzoic acid, (2'R,12'S)-6-(2-acetoxy-12-hydroxytridecyl)-2,4-dihydroxy-benzoic acid and (2'R,12'S)-5-(2-acetoxy-12-hydroxytridecyl) resorcinol were identified. The identification of all these substances was acheived by spectroscopic means.