Table 2. The EC₅₀ and E_max values of memantine nitrates dilating aortic rings.

Compounds	E–		E+
	EC50 (μM)	E max (μM)	EC50 (μM)	E max (μM)
MN-02	146.33 ± 32.80	42.03 ± 3.70	—	39.47 ± 2.41
MN-03	94.82 ± 10.11	61.68 ± 1.63	—	51.99 ± 1.44
MN-05	50.57 ± 4.38	98.19 ± 1.01	46.35 ± 1.56	101.26 ± 2.46
MN-08	26.85 ± 7.23	89.76 ± 3.31	24.38 ± 0.97	94.96 ± 0.42
MN-12	62.81 ± 8.45	90.50 ± 4.94	54.97 ± 6.87	96.75 ± 2.15
MN-13	57.05 ± 1.23	99.37 ± 0.77	36.04 ± 2.02	101.47 ± 1.04
MN-14	34.40 ± 10.38	95.36 ± 2.62	24.60 ± 3.37	97.74 ± 2.16
MN-16	36.46 ± 6.84	95.79 ± 4.05	31.97 ± 9.55	100.21 ± 1.48