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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

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