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Table 2 Values of the intrinsic binding constants (K i) and binding site sizes (n) and fraction of compound molecules accessible to external quenchers (f a ) for interaction with salmon sperm DNA

From: New potential antitumoral fluorescent tetracyclic thieno[3,2-b]pyridine derivatives: interaction with DNA and nanosized liposomes

Compound K i(M-1) n f a
1 (8.7 ± 0.9) × 103 11 ± 3 0.89
2 (5.9 ± 0.6) × 103 7 ± 2 0.65