Patent ID: 7893266

Claim:
A method for detecting a cancer cell in a mammalian tissue sample in vitro, the method comprising: a) contacting a mammalian tissue sample with a radiolabeled compound or salt thereof of Formula wherein: each of X, Y, and Z is a substituent selected from the group consisting of a hydrogen, a halogen, a C 1 -C 4 alkoxyl, a C 1 -C 4 alkyl, a C 1 -C 4 fluoroalkyl, a C 1 -C 4 fluoroalkoxyl, a CF 3 , and an OCF 3 , wherein at least one of X, Y and Z comprises a radioisotope selected from the group consisting of a bromine, an iodine, a carbon of a 2-methoxyl and a tritium of a 2-methoxyl; n is an integer from 2 to about 10; and each of A and A 1 is independently selected from the group consisting of a C 1 -C 4 alkoxyl, a C 1 -C 4 fluoroalkyl and a C 1 -C 4 fluoroalkoxyl; and b) detecting the distribution of the radioisotope in the tissue sample, whereby a cell having a high density of the radioisotope compared to quiescent cells is diagnostic for a cancer cell.