2,3,5,6-tetramethylpyrazine
Telephone Bargaining
2,3,5-trimthylpyrazine
2-Methoxy-3(5or6)-Methylpyazine
2-Acetylpyrazine
2-Ethoxy-3(5or6)methylpyrazine
2-Fufurylthio-3(5or6)-methylpyrazine
2-Methylthio-3(or5or6)-methylpyrazine
2,3-diethyl-5-methylpyrazine
5,6,7,8-tetrahydroquiuinoxaline
3-Ethy-2-Methyl pyrazine
2-Methylthio-3-methyl pyrazine
2-Ethyl pyrazine
2,3-Dimethyl-5-isopropyl pyrazine
2,3-Dimethyl-5-ethyl pyrazine
2,3-Dimethyl-5-sec-butyl pyrazine
4-Methyl-5(
