炔烃 alkynes： 炔烃，为分子中含有碳碳三键的碳氢化合物的总称，是一种不饱和的脂肪烃，直链单炔烃的分子通式为CnH2n-2（其中n为非1正整数），简单的炔烃化合物有乙炔（C2H2），丙炔（C3H4）等。其中，乙炔是最重要的一种炔烃，在工业中可用以照明、焊接及切断金属（氧炔焰），也是制造乙醛、醋酸、苯、合成橡胶、合成纤维等的基本原料。
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![115899-38-2|2'-脱氧-5-[3-[(三氟乙酰基)氨基]-1-丙炔基]胞苷|N-(3-{4-amino-1-[(2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-2-oxo-1,2-dihydropyrimidin-5-yl}prop-2-yn-1-yl)-2,2,2-trifluoroacetamide](https://images.chemany.com/attachments/products_new/svg/115899-38-2.svg)
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![116903-46-9|4-甲基-4'-乙氧基二苯乙炔|1-[2-(4-ethoxyphenyl)ethynyl]-4-methylbenzene](https://images.chemany.com/attachments/products_new/svg/116903-46-9.svg)
![1190376-20-5|4,4,5,5-四甲基-2-(4-(苯基乙炔基)苯基)-1,3,2-二氧硼烷|4,4,5,5-tetramethyl-2-[4-(2-phenylethynyl)phenyl]-1,3,2-dioxaborolane](https://images.chemany.com/attachments/products_new/svg/1190376-20-5.svg)
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