1 521 5-(4-chloro-5-phenyl-3-thienyl)-1,2,5-thiadiazolidin-3-one 1,1-dioxide 1.000 2 T1D 5-(4-methoxybiphenyl-3-yl)-1,2,5-thiadiazolidin-3-one 1,1-dioxide 0.750 3 73U 5-[4-methyl-4'-(methylamino)[1,1'-biphenyl]-3-yl]-1lambda~6~,2,5-thiadiazolidine-1,1,3-trione 0.720