2,5-dichloropyrazine 2,5-二氯吡嗪 19745-07-4 C4H2Cl2N2 148.98 ≥95% colorlessliquid無色液體 2,5-dibromopyrazine 2,5-二溴吡嗪 23229-26-7 C4H2Br2N2 237.88 ≥98% Whitesolid 白色固體 3-methylpyrazin-2-amine 2-氨基-3-甲基吡嗪 19838-08-5 C5H7N3 109.13 ≥98% Paleyellowcrystals 淺黃色固體 methyl3-aminopyrazine-2-carboxylate 3-氨基吡嗪-2-羧酸甲酯 16298-03-6 C6H7N3O2 153.14 98% Paleyellowcrystals 淺黃色固體 methyl3-amino-6-chloropyrazine-2-carboxylate 3-氨基-6-氯吡嗪-2-羧酸甲酯 1458-03-3 C6H6ClN3O2 187.5837 98% Paleyellowcrystals 淺黃色固體 5-chloropyrazin-2-ol 2-羥基-5-氯吡嗪 89180-45-0 C4H3ClN2O 130.5324 98% Paleyellowcrystals 淺黃色固體 5-bromopyrazin-2-ol 2-羥基-5-溴吡嗪 374063-92-0 C4H3N2OBr 174.98 98% Paleyellowcrystals 淺黃色固體 (2S)-(+)-2,5-Dihydro-3,6-dimethoxy-2-isopropylpyrazine (S)-2,5-二氫-3,6-二甲氧基-2-異丙基吡嗪 78342-42-4 C9H16N2O2 184.24 98% 無色液體 (S)-2,5-Dihydro-3,6-diethoxy-2-isopropylpyrazine (S)-2,5-二氫-3,6-二乙氧基-2-異丙基吡嗪 134870-62-5 C11H20N2O2 212.29 98% 無色液體 3,5-Dibromo-2-hydroxypyrazine 3，5-二溴-2-羥基吡嗪 21943-15-7 C4H2Br2N2O 253.88 98% Paleyellowcrystals 2-Amino-3,5-dibromopyrazine 2-氨基-3,5-二溴吡嗪 24241-18-7 C4H3Br2N3 252.89 98% yellowcrystals