Asahina; Hashimoto Chemische Berichte, 1933 , vol. 66, p. 641,645 Yakugaku Zasshi, 1933 , vol. 53, p. 820,826 Full Text Show Details Asahina; Fujikawa Chemische Berichte, 1932 , vol. 65, p. 580,582 Yakugaku Zasshi, 1932 , vol. 52, p. 986,990