The molecule is a zwitterion obtained by transfer of a proton from the 5-hydroxy to the tertiary amino group of aclacinomycin A. It is the major microspecies at pH 7.3 (according to Marvin v 6.2.0.). It has a role as an antimicrobial agent, an antineoplastic agent, an apoptosis inducer and an EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor. It is a conjugate base of an aclacinomycin A(1+). It is a tautomer of an aclacinomycin A.
(1R,2R,4S)-4-[(2R,4S,5S,6S)-4-(dimethylazaniumyl)-5-[(2S,4S,5S,6S)-4-hydroxy-6-methyl-5-[(2R,6S)-6-methyl-5-oxooxan-2-yl]oxyoxan-2-yl]oxy-6-methyloxan-2-yl]oxy-2-ethyl-2,7-dihydroxy-1-methoxycarbonyl-6,11-dioxo-3,4-dihydro-1H-tetracen-5-olate