Ethosuximide-d3 (CAS 1189703-33-0)

Ethosuximide-d3 is a deuterium-labeled analog of the parent compound ethosuximide, which is used in research environments primarily for the purpose of analytical calibration and method development. This stable isotope-labeled chemical is particularly valuable in the field of analytical chemistry where it is used as an internal standard in mass spectrometry assays to quantify ethosuximide in biological samples. The addition of deuterium atoms to the molecule provides a slight mass increase, enabling differentiation from the non-labeled ethosuximide while retaining identical chemical properties, ensuring accurate and precise measurements. In metabolic studies, Ethosuximide-d3 assists researchers in investigating the metabolic fate of ethosuximide, including its absorption, distribution, and elimination patterns. It also plays a role in the development of new analytical methods that require the use of stable isotope standards to improve the reliability and robustness of bioanalytical assays.