Marakaeva Anastasiya V. RussiaSaratovSaratov State University , 83, Astrakhanskaya str., Saratov, 410012, Russia marakaeva_anastasiya@mail.ru Author's articles Exploration of Possibilities for Organic Selenides and Dihydroselenochromilium Salt Interaction with Diphenylpicrylhydrazyl Test-Determination of Amoxicillin in Medications Visual Colorimetric and Colorimetric Determination of Cefuroxime