(1-Methylethenyl)pyrazine 2-(1-Methylvinyl)pyrazine 2-(alpha-Methylvinyl)pyrazine 2-Isopropenyl-1,4-diazine 2-Isopropenylpyrazine 38713-41-6 FEMA No. 3296 Isopropenylpyrazine Prazine, (1-methylethenyl)- Pyrazine, (1-methylethenyl)-