Table 3 IC₅₀ values of selected nitrogenous compounds for Saccharomyces cerevisiae Y128

2-Methylimidazole

50.9 ± 0.7

4(5)-Methylimidazole

25.2 ± 1.0

2,4-Dimethylimidazole

33.1 ± 10.4

2-Methylpyrazine

>100^a

2,3-Dimethylpyrazine

83.9 ± 7.5

2,5-Dimethylpyrazine

80.9 ± 4.8

2,6-Dimethylpyrazine

82.6 ± 3.8

2,3,5-Trimethylpyrazine

66.8 ± 3.5

(5-Methylpyrazin-2-yl)methanol

>80^a