吡唑是通式为C3H3N2H的有机化合物.它是由三个碳原子和两个相邻的氮原子组成的五元环组成的杂环.吡唑是弱碱,pKb 11.5(共轭酸2.49在25℃下的pKa).吡唑也是具有环C3N2与相邻氮原子的一类化合物.
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