Doub et al. Journal of the American Chemical Society, 1958 , vol. 80, p. 2205,2210 Full Text Show Details Ogawa Technology Reports of Kansai University, 1959 , # 1 p. 41,43, 44 Full Text Show Details Ishidate; Nambara Pharmaceutical Bulletin, 1953 , vol. 1, p. 290 Full Text Show Details Sugimoto et al. Yakugaku Zasshi, 1951 , vol. 71, p. 1161 Chem.Abstr., 1952 , p. 5011