2,3,5,6-tetramethyl pyrazine
2,3,5-trimethyl pyrazine
2,6-dimethyl pyrazine
2-acetyl pyrazine
2-methyl butyric acid
Terpineol
ethyl maltol
2-acetyl pyridine
gamma-octalactone
All of these are widely used in the creation and/or manufacturing of fragrance and/or flavor concentrates of all types...