Patent ID: 8609135

Claim:
An anthracycline derivative of the general formula I, wherein: R is either a double-bound oxygen atom or a hydroxyl group in both stereoisomeric forms, R 1 is CH 3 or CH 2 OH, and R 2 is a Y—Ar—Z group, wherein: Y is —(CH 2 ) n — or a polyethylene glycol chain of the formula —(CH 2 CH 2 O) n —, where n is 1-8; Ar is a monocyclic aromatic group substituted with a radioactive nuclide selected from the group consisting of 123-125 I, 131 I, 18 F, 76-77 Br, 211 At, 90 Y, 32 P, 67 Cu, and 189 Re or with a stable nuclide that is selected from the group consisting of 10 B and 157 Gd; and Z is a hydroxyl group or a sugar group; and salts thereof.