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5-氨基咪唑核苷酸(AIR)

- tikz \usepackage chemfig \begin document \chemfig \fbox R - 2,0.8 N - 2,0.25 9 - 3.5,0.6 - 3.3,0.25 4 - 4.5,0.7 N - 2,0.25 3 - 4,0.3 H 2 = 2,0.8 - 4.8,0.25 5 - 0.5,0.8 N - 5.5,0

-

\usepackage{chemfig}
\begin{document}

\chemfig{
	\fbox{R}-[2,0.8]N(-[2,0.25]9)
	-[3.5,0.6](-[3.3,0.25]4)(-[4.5,0.7]N(-[2,0.25]3)(-[4,0.3]H_2))
	=[2,0.8](-[4.8,0.25]5)
	-[0.5,0.8]N(-[5.5,0.25]7)(-[,0.3]H)
	=[6.55,0.8]
		(-[4,0.2]8)
		-[5.25,0.6]
}

\end{document}

-

\usepackage{chemfig}
\begin{document}

\chemfig{
(-[3.3,0.25]4)(-[4.5,0.7]N-[3,0.25]3)
=[2,0.8](-[4.8,0.25]5)
	(
		-[0.5,0.8]N(-[5.5,0.25]7)
		=[6.55,0.8](-[4,0.25]8)
		-[5.25,0.8]N(-[2,0.25]9)(-[6,0.8]\fbox{R})
		-[3.5,0.6]
	)
}

\end{document}