13925-05-8 2-Isopropyl-5-methylpyrazine 2-Methyl-5-(1-methylethyl)pyrazine 2-Methyl-5-isopropylpyrazine 5-Isopropyl-2-methylpyrazine FEMA No. 3554 Pyrazine, 2-isopropyl-5-methyl- Pyrazine, 2-methyl-5-(1-methylethyl)-