Atenolol stable isotopes are a type of isotopes that have a stable atomic structure. They are used in pharmacological research to study the metabolism and distribution of atenolol, a beta-blocker medication commonly used to treat hypertension. These stable isotopes are useful in determining the pharmacokinetic properties of atenolol, including its absorption, distribution, metabolism, and excretion. Researchers can use these isotopes to track the movement of atenolol in the body and to better understand its therapeutic effects.