five agents proved significantly more cytotoxic than adr : dihydroxyanthraquinone ( dhaq ) , mitoxantrone ( dhad ) , 4-demethoxydaunorubicin ( 4-dnr ) , 4'-0-tetrahydropyranyl-adriamycin ( thp-adr ) , and 4'-deoxyadriamycin ( 4-adr ) .
C0020789
4-demethoxydaunorubicin
C0011015
dnr