Abstract: | The composition of the photolytic mixture formed on the irradiation of provitamin D4 has been studied. Together with the main reaction products — vitamin D4 and provitamin D4 — a number of by-products were formed the structures of which have been established from their spectral characteristics.Lensoviet Leningrad Technological Institute. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 247–254, March–April, 1989. |