Screening studies of phenolic compounds were made for seven Siberian Saussurea species DC.: S. controversa DC., S. latifolia Ledeb., S. parviflora (Poir.) DC., S. frolowii Ledeb., S. amara (L.) DC., S. salicifolia DC. и S. davurica Adams. All these plants contain aglycons and glycosides of flavonoids while quercetin and isoquercitrin are the most often found. Another 7 flavonoids are determined along with them in some of these species. Phenolic acids were detected in all samples with a predominance of coffee, chlorogenic and cinnamic acids. Esculetin and umbelliferone were identified in specimens of four different species
