Preparation of individual derivatives in 1,3-oxazino[5,4,3-ij]quinolines and 1,4-oxazino[2,3,4-ij]quinolines series by column chromatography and their mass spectrometric study. sorpchrom [Internet]. 2023 Oct. 29 [cited 2026 Apr. 3];23(4):705-1. Available from: https://journals.vsu.ru/sorpchrom/article/view/11577