(4-NH2)-Exatecan-d5
(4-NH2)-Exatecan-d5 is a deuterated labeled (4-NH2)-Exatecan. (4-NH2)-Exatecan (compound A), a topoisomerase inhibitor, is a derivative of Exatecan. (4-NH2)-Exatecan can be used in the synthesis of antibody-dr_ug conjugates (ADCs).