Sunagawa et al. Yakugaku Zasshi, 1952 , vol. 72, p. 1570,1572 Chem.Abstr., 1953 , p. 9285 Full Text Show Details Nepera Chem.Co. Patent: DE823598 , 1951 ; DRP/DRBP Org.Chem. Full Text Show Details Pyridium Corp. Patent: US2465865 , 1946 ; Full Text Show Details Soc.Usines Chim.Rhone-Poulenc Patent: DE880749 , 1951 ; DRP/DRBP Org.Chem. Full Text Show Details Matsukawa et al. Yakugaku Zasshi, 1951 , vol. 71, p. 1316 Chem.Abstr., 1952 , p. 8123 Full Text Show Details Saijo Yakugaku Zasshi, 1952 , vol. 72, p. 1447,1450 Chem.Abstr., 1953 , p. 8080