Losartan impurity 21-d₄ 

Losartan impurity 21-d₄ is the deuterium labeled Losartan impurity 21[1]. Losartan impurity 21-d4 is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.

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].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

451.95

C₂₂H₁₈D₄ClN₉

ClC1=C(CN=[N+]=[N-])N=C(CCCC)N1CC2=C([2H])C([2H])=C(C3=CC=CC=C3C4=NNN=N4)C([2H])=C2[2H]

Room temperature in continental US; may vary elsewhere.

Please store the product under the recommended conditions in the Certificate of Analysis.

• [1]. Russak EM, et al. Impact of Deuterium Substitution on the Pharmacokinetics of Pharmaceuticals. Ann Pharmacother. 2019;53(2):211-223.  [Content Brief]