Pyrazine
2-Methyl pyrazine
2,3-Dimethyl pyrazine
2,5(or6)-Dimethyl pyrazine
2,6-Dimethyl pyrazine
2,3,5-Trimethyl pyrazine
2,3,5,6-Tetramethyl pyrazine
2-Ethyl pyrazine
2,3-Diethyl pyrazine
2-Ethyl-3-methyl pyrazine
2,3-Diethyl-5-methyl pyrazine
2-Ethyl-5(or6)-methyl pyrazine
2-Ethyl-3,(5or6)-dimethyl pyrazine
2-Isobutyl-3-methyl pyrazine
2-Methoxy pyrazine
2-Methyl-3-methoxy pyrazine
2-Methoxy-3(5or6)-methoxy pyrazine
2-Ethyl-3-methoxy pyrazine
2-Methoxy-3-isopropyl pyrazine
2-Methoxy-3-isobutyl pyrazine
2-Methoxy-3-secbutyl pyrazine
2-Methylthio pyrazine
2-Methyl-3-methylthio pyrazine
2-Methyl-3(5or6)-（methylthio) pyrazine
2-Methyl-3(5or6)-ethoxy pyrazine
Acetyl pyrazine
2-Acetyl-3-methyl pyrazine
2-Acetyl-3-ethyl pyrazine
2-Acetyl-3,5(or6)-dimethyl pyrazine
2-methyl-3(5or6)-Furfurylthio pyrazine
