MIC values of selected spiramycin I derivatives, expressed in μg mL⁻¹, and in μM, evaluated in the 0.5–128 μM range of concentrations.

	S. aureus ATCC25923	S. aureus MRSA ATCC515992	S. epidermidis ATCC12228	B. subtilis ATCC6633
Spiramycin I	53.96 [64]	53.96 [64]	13.49 [16]	13.49 [16]
1	7.40 [8]	14.80 [16]	3.70 [4]	3.70 [4]
2	3.77 [4]	7.54 [8]	3.77 [4]	1.89 [2]
3	7.75 [8]	15.51 [16]	7.75 [8]	1.94 [2]
4	7.63 [8]	15.25 [16]	3.81 [4]	3.81 [4]
5	14.85 [16]	29.70 [32]	7.43 [8]	3.71 [4]
6	7.76 [8]	15.52 [16]	7.76 [8]	1.94 [2]
9a	>128.42 [>128]	16.05 [16]	4.01 [4]	4.01[4]
10a	8.02 [8]	32.08 [32]	4.01 [4]	4.01 [4]
10b	16.04 [16]	16.04 [16]	8.02 [8]	2.00 [2]
11	>133.12 [>128]	33.30 [32]	4.16 [4]	8.32 [8]
12	8.13 [8]	16.27 [16]	4.07 [4]	4.07 [4]
13	17.56 [16]	35.12 [32]	8.78 [8]	4.39 [4]
14	17.75 [16]	17.75 [16]	8.88 [8]	4.44 [4]
16	3.87 [4]	7.75 [8]	0.97 [1]	0.97 [1]
17	15.61 [16]	62.44 [64]	7.80 [8]	15.61 [16]
20	8.24 [8]	32.97 [32]	8.24 [8]	2.06 [2]
Linezolid	1.35 [4]	2.67 [8]	0.34 [1]	0.17 [0.5]