(4-NH2)-Exatecan, a topoisomerase inhibitor derivative extracted from patent US20200306243A1, compound A. (4-NH2)-Exatecan can be used in the synthesis of antibody-drug conjugates (ADCs).

2495742-21-5

C23H21N3O4

403.43

(4-NH2)-Exatecan

(< 1 mg/ml refers to the product slightly soluble or insoluble )
Powder: -20°C for 3 years
In solvent: -80°C for 2 years