ChemAxonHussain, A. and Truelove, J.E.; U.S. Patents 3,809.714; May 7,1974; and 3,839,584; October 1, 1974; both assigned to Inter Rx Research Corp. Henschler, D., Wagner, J. and Hampel, H.; US. Patent 4,085,270; April 18,1978; assigned to Chemisch-Pharmazeutische Fabrik Adolf Klinge & Co. (W. Germany).HANSCH,C ET AL. (1995)ALOGPS