7-Aminomethyl-10-methyl-11-fluoro camptothecin TFA is a cytotoxin of MC-AAA-NHCH2OCH2COO-7-aminomethyl-10-methyl-11-fluoro camptothecin. 7-Aminomethyl-10-methyl-11-fluoro camptothecin TFA can be used for the synthesis of camptothecin antibody-drug conjugate (ADC).