Horii Yakugaku Zasshi, 1939 , vol. 59, p. 552,558; engl. Ref. S. 209, 212 Chem.Abstr., 1940 , p. 3270 Full Text Show Details Nakazawa Yakugaku Zasshi, 1939 , vol. 59, p. 524,527; dtsch. Ref. S. 199, 200 Chem.Abstr., 1940 , p. 1017