Displaying 7 results of Gefitinib Stable Isotopes Gefitinib Stable Isotopes are a type of stable isotopes of Gefitinib, which are used in medical research and drug development. These isotopes are chemically identical to the regular Gefitinib, but they have a different number of neutrons in their nucleus, making them more stable. They are used to study the metabolism and pharmacokinetics of Gefitinib in the body, and to develop more effective and safer drugs for cancer treatment.