Am. Home Prod. Corp. Patent: US2700681 , 1952 ; Full Text Show Details Am. Home Prod. Corp. Patent: DE922887 , 1950 ; Full Text Show Details Madsen, J.Oe.; Meldal. M.; Mortensen. S.; Olsson, B. Acta Chemica Scandinavica, Series B: Organic Chemistry and Biochemistry, 1981 , vol. 35, # 2 p. 77 - 82