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C：胞嘧啶（cytosine）

胞嘧啶 cytosine C smiles C1=C NC =O N=C1 N $结构式：$ - Beilstein tikz \usepackage chemfig \begin document \chemfig N - 4,0.3,,,transparent 1 6 - - 7,0.3,,,transparent 2 =O -N - ,

作者：admin

2026-08-16

称谓

胞嘧啶 cytosine C

3D结构

C1=C(NC(=O)N=C1)N

$结构式：$

• Beilstein

\usepackage{chemfig}
\begin{document}
\chemfig{
N(-[4,0.3,,,transparent]1)**6(
		-(-[7,0.3,,,transparent]2)(=O)
		-N(-[,0.3,,,transparent]3)
		-(-[,0.3,,,transparent]4)
		-(-[,0.3,,,transparent]5)
		-(-[4,0.3,,,transparent]6)(-[,,,1]NH_2)
		-
	)
} 
\end{document}

\usepackage{chemfig}
\begin{document}
\chemfig[atom sep=2em,cram width=2pt]{
H-[2,0.4,,,,transparent]N
		*6(-(=O)-[,,,1]N=(-NH_2)-=-)
}
\end{document}

\usepackage{chemfig}
\begin{document}
\chemfig{
N(-[6,0.3]H)-[0.7,0.5](=[7.3,0.5]O)
	-[2,0.5]N
		=[3.3,0.5](-[2,0.5]NH_2)
			-[4.7,0.5]
				=[6,0.5]
					-[7.3,0.4]
} 
\end{document}

\usepackage{chemfig}
\begin{document}
\chemfig{
N(-[6,0.3]H)-[0.7,0.6](=[7.3,0.6]O)
	-[2,0.6]N
		=[3.3,0.6](-[2,0.6]NH_2)
			-[4.7,0.6]
				=[6,0.6]
					-[7.3,0.4]
} 
\end{document}

形成的核苷酸

\usepackage{chemfig}
\begin{document}
\chemfig{
N(-[4,0.3,,,transparent]1)**6(
		-(-[7,0.3,,,transparent]2)(=O)
		-N(-[0,0.3,,,transparent]3)(-Sugar)
		-(-[,0.3,,,transparent]4)
		-(-[,0.3,,,transparent]5)
		-(-[4,0.3,,,transparent]6)(-[,,,1]NH_2)
		-
	)
} 
\end{document}

\usepackage{chemfig}
\begin{document}
\chemfig{
N(-[4,0.3,,,transparent]1)*6(
		-(-[7,0.3,,,transparent]2)(=O)
		-N(-[0,0.3,,,transparent]3)(-Sugar)
		-(-[,0.3,,,transparent]4)
		=(-[,0.3,,,transparent]5)
		-(-[4,0.3,,,transparent]6)(-[,,,1]N(-[4]H)(-[1.3]H))
		=
	)
} 
\end{document}