Patent ID: 8679773
Filing Date: 2014-03-25
Classification: A61K,C07D,G01N,Y10T

Abstract:
1. A kit comprising: a) a set of two or more isobaric and/or isomeric reagents for the labeling of analytes, wherein all reagents of the set comprise the formula: or a salt thereof, wherein; i) RG is a reactive group that is an active ester wherein the alcohol moiety of the active ester is: ii) Z is O, S, NH or NR iii) each j is the same or different and is selected from the group consisting of: H, R iv) one of A v) the remainders of A vi) each R R wherein each reagent of the set is optionally isotopically enriched by replacing one or more atoms of the reagent with a corresponding heavier atom isotope; and b) one or more other reagents, containers, enzymes, buffers or instructions.