Table 3. Comparison of the activity of some hit compounds at 20 μM and 50 μM against stationary phase B. burgdorferi^a.

NSC number	Compounds	Residual viable cells (%)
		20 μMb	20 μMc	50 μMc
258812	Control	93	94	95
	Amoxicillin	77	77	77
	Doxycycline	76	77	77
	Daptomycin	32	25	18
	Dimethyldaunomycin hydrochloride	0	10	10
363998	Anthracene-9,10-dione, 1,5-bis[3-[[(2-hydroxyethyl)amino] propyl]amino]-9,10-dihydro-, dihydrochloride	22	14	13
70845	Nogalamycin	3	15	15
267229	Pyrromycin	6	20	21
136044	Rhodomycin A	5	21	21
345647	Chaetochromin	31	33	22
47147	Prodigiosin	0	45	24
267461	Nanaomycin	39	45	26
659997	Naphthalene-1,4-dione, 2-chloro-5,8-dihydroxy-3-(2-methoxyethoxy)-	40	50	28
224124	(5,8-dihydroxy-1,4-dioxo-1,4-dihydronaphthalene-2,3-diyl)dimethanediyl dicarbamate	54	77	31
617570	Benzoic acid, 2-hydroxy-, (2,6-pyridinediyldiethylidyne) dihydrazide, nickel complex	66	50	38
93739	2-Methyl-4,4′-[(4-imino-2,5-cyclohexadien-1-ylidene)methylene]dianiline hydrochloride	0	77	43

^aSeven-day-old stationary phase B. burgdorferi culture was treated with drugs for seven days.

^bResidual viable B. burgdorferi was calculated according to the regression equation and the ratio of Green/Red fluorescence obtained by the SYBR Green I/PI assay.

^cResidual viable B. burgdorferi was assayed by epifluorescence microscope counting.