... other pharmaceuti- cals.“ From these viewpoints, dihydroorotic acid deriv— atives are biologically and chemically of interest ... 1 H 73,1) 33,1) aZ(S)- b:(R) Chart 1 1989 Pharmaceutical Society of ... 0.063-0.20 mm, B Merck) was employed, and SK-lB (DIAION, Mitsubishi Chemical Ind ...