1 high purity 99% 2 lower price 3 fast service Detailed Product Description Name: 2,3,5,6-- tetramethylpyrazine Molecular formula: C8H12N2Formulation: ... White needle crystal or powder Purity:99%meltingpoint :80~82 ... ,excellent quality,reasonable price! Welcom to your inquiry! 2,3,5,6-tetramethylpyrazine