5-磷酸核糖胺（5PRA）

称谓

5-磷酸核糖胺 5'-磷酸核糖胺

-1-R-5'-P$

$结构式：$

推测的 -

\usepackage{chemfig}
\begin{document}

\chemfig{
	(-[3,0.25])
	(<:[0.3,0.7]NH_2)
	-[5.5,0.5]
		(<:[7,0.7]OH)
	-[3.8,0.5]
		(<:[5,0.7]HO)
	-[2.2,0.5]
		(-[0.5,0.5]O)
		(<[3.5,0.7]-[4.5,0.8]\fbox{P})
}

\end{document}

-

\usepackage{chemfig}
\begin{document}

\chemfig{
	(-[3,0.25])
	(<:[0.3,0.7]NH_2(-[2,0.35]9))
	-[5.5,0.5]
		(<:[7,0.7]OH)
	-[3.8,0.5]
		(<:[5,0.7]HO)
	-[2.2,0.5]
		(-[0.5,0.5]O)
		(<[3.5,0.7]-[4.5,0.8]\fbox{P})
}

\end{document}

• 把5-磷酸核糖部分看做R基，则可简写为：

\usepackage{chemfig}
\begin{document}

\chemfig{
	\fbox{R}-[2,0.8]N(-[3,0.3]9)
}

\end{document}