2-Ethoxy-3（5/6）- methyl pyrazine
Telephone Bargaining
2-Methylthio-3- methyl pyrazine
2-Furfurylthio-3（5/6）- methyl pyrazine
2-Methylthio-3（5/6）- methyl pyrazine
2-Propoxy-3（5/6）- methyl pyrazine
2-Isopropoxy-3(5/6)-methyl pyrazine
2-Methoxy-3-isopropyl pyrazine
2-Methoxy-3-secbutyl pyrazine
2-Methoxy-3-isobutyl pyrazine
2-Acetyl pyrazine
2-Acetyl-3-ethyl pyrazine
2-Acetyl-3-methyl pyrazine
2-Acetyl-3（5/6）-dimethyl pyrazine
β- Mercaptomethyl pyrazine
5. 6. 7. 8-Tetrahydroquinoxaline
5H-5-Methyl-6. 7-dihydrocyclopenta pyrazine
