US2282211 , ; Yakugaku Zasshi, , vol. 62, p. 224,225 Chem.Abstr., , p. 10161 Arquivos Biol. Sao Paulo, , vol. 27, p. 55,59 Zhurnal Prikladnoi Khimii (Sankt-Peterburg, Russian Federation), , vol. 12, p. 1481,1483 Chem.Abstr., , p. 6244 US2399600 , ; US2413833 , ; US2291285 , ;