BASF Patent: DE800664 , 1950 ; DRP/DRBP Org.Chem. Full Text Show Details Nasarow; Kugatowa; Mosolis Zhurnal Obshchei Khimii, 1957 , vol. 27, p. 2635,2638 J. Gen. Chem. USSR (Engl. Transl.), 1957 , vol. 27, p. 2682,2684