2-NP-AHD-13C3 is the 13C labled 2-NP-AHD . 2-NP-AHD is a 2-nitrophenyl derivative of AHD (a metabolite of nitrofurans type of antibiotics), can be used as indicator of the illegal usage of nitrofuran agents.
Stable heavy isotopes of hydrogen, carbon, and other elements have been incorporated into drug molecules, largely as tracers for quantitation during the drug development process. Deuteration has gained attention because of its potential to affect the pharmacokinetic and metabolic profiles of drugs[1].
References:
[1]. Russak EM, et al. Impact of Deuterium Substitution on the Pharmacokinetics of Pharmaceuticals. Ann Pharmacother. 2019 Feb;53(2):211-216.