[A derivative of rhodacyanine with potential antineoplastic activity. FJ5002 inhibits telomerase by interfering with holoenzyme assembly and telomere interaction, thus leading to replication-dependent shortening of telomeres with a concurrent increase in aneuploid metaphases and apoptotic cells. Telomerase is active in most tumors cells, but is quiescent in adjacent normal cells. (NCI04) ( NCI )] (UMLS (NCI) C0908717) =Organic Chemical; Pharmacologic Substance ;