13925-06-9 2-ISOBUTYL-3-METHYLPYRAZINE 2-Methyl-3-(2-methylpropyl)pyrazine 2-Methyl-3-isobutylpyrazine EINECS 237-693-6 FEMA No. 3133 Pyrazine, 2-isobutyl-3-methyl- Pyrazine, 2-methyl-3-(2-methylpropyl)-