二甲基吡嗪与苯乙酸，硝酸银和过硫酸铵反应。
Dimethylpyrazine reacted with phenylacetic acid, silver nitrate and ammonium persulfate.
氨甲基吡嗪的收率为38%，反应条件温和。
本文研究了微波放电活化氚气法标记四甲基吡嗪。
Tetramethylpyrazine is labelled with tritium by microwave discharge activation (MDA)of tritium gas.
盐酸四甲基吡嗪在中国广泛用于缺血性脑血管病的治疗。
Tetramethylpyrazine hydro-chloride have been used in clinic of ischemic cerebral vascular disease in China.
川芎嗪为人工合成的四甲基吡嗪注射液，北京第四制药厂产品。
TMP was artificial injection, which was manufacture by the Fourth Pharmaceutical Factory in Beijing.
单体香料组中，添加香荚兰豆酊卷烟对细胞的氧化损伤能力最大，三甲基吡嗪最小；
In the group adding monomer flavor, the oxidative damage of adding vanilla bean derivatives is the maximum, trimethylpyrazine is the least;
检测结果表明，不同酒样中的四甲基吡嗪的含量有较大差异，可以据此对白酒品质进行评价。
The measurement results suggested that there was great different in tetramethylpyrazine content in different liquor samples, which could be used to evaluate liquor quality.
方法制成磷酸四甲基吡嗪胃浮片的双层片，通过对溶出度、漂浮性能的考察及漂浮力的测定，确定最优处方。
Methods The tablets were manufactured into double layer tablets, and the optimal formula was determined by the investigation into floatability and dissolution, and the determination of floating force.
以2，3- 丁二酮和乙二胺为原料，采用二步法合成了2，3-二甲基吡嗪．研究了催化剂体系对脱氢反应的影响，得到了较好的结果．。
Dimethylpyrazine was synthesized by the two_steps method of 2,3-butylanedione and ethylenediamine, the dehydrogen catalytic system was studied and better results were obtained.
利用相转移催化法合成香料2-甲基-3 甲氧基吡嗪，并对其反应条件进行探讨，找到较佳的反应条件。
The synthetic method of perfume 2 - methyl - 3 - methoxy pyrazine was investigated and better reaction conditions have been found.
利用相转移催化法合成香料2-甲基-3 甲氧基吡嗪，并对其反应条件进行探讨，找到较佳的反应条件。
The synthetic method of perfume 2 - methyl - 3 - methoxy pyrazine was investigated and better reaction conditions have been found.
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