Pyrazine
Telephone Bargaining
2. 6-Dimethyl pyrazine
2. 3. 5. 6-Tetramethyl pyrazine
2. 3. 5-Trimethyl pyrazine
2-Ethyl pyrazine
2-Ethyl-3-methyl pyrazine
2. 3-Diethyl pyrazine
2-Ethyl-3. 5（6）-dimethyl pyrazine
2-Methoxy pyrazine
2. 3-Diethyl-5-methyl pyrazine
2-Ethoxy pyrazine
2-Furfurylthio pyrazine
2-Methylthio pyrazine
2-Methoxy-3-methyl pyrazine
2-Ethoxy-3- methyl pyrazine
2-Methoxy-3（5/6）- methyl pyrazine
