Patent ID: 7977102

Claim:
A composition comprised of the formula wherein each G is independently chosen from a support, hydrogen, a C 1 -C 4 alkyl, haloalkyl, cycloalkyl, cyano, fluoro, chloro, bromo, iodo, NH 2 , NHR, NR 2 , —OM, OR, and —COOQ; wherein at least one G is a support selected from a metal support, a nanoparticle support, a magnetic bead support, a silica support, a resin support, polyethylene glycol, polyethylene glycol substituted with vinyl benzene, a silicon support, a glass support, a ceramic support, and a core-shell material support; wherein M is chosen from hydrogen, alkyl, haloalkyl, cycloalkyl, phenyl, and substituted phenyl; wherein Q is chosen from hydrogen and alkyl; wherein E comprises sulfur, sulfoxide, sulfone, selenium, selenoxide, and selenone; wherein T, X, and Z are groups each independently chosen from 1 H, 2 H, a C 1 -C 4 alkyl, fluoro, chloro, bromo, iodo, amino, NHR, NR 2 , and OR wherein R is chosen from a C 1 -C 4 alkyl, chloro, bromo, amino, a monocyclic aryl, substituted monocyclic aryl, bicyclic aryl, and substituted bicyclic aryl; wherein R f is a fluorous group; wherein each J is independently selected from hydrogen and alkyl, wherein m is 2, 3, 4, 5, or 6; and wherein at least one of C, T, X, and Z of the —C(T)(X)(Z) group attached to E comprises a stable isotope, wherein the stable isotope of C is 13 C and wherein the stable isotope of T, X, Z comprises 13 C or 2 H.