I need to write this reaction scheme:
But I can't figure out how to place the NADH molecule like it is in the figure. Help me please, thanks!
Thanks to Clemens' comment, I've worked out this MWE:
\documentclass{article}
\usepackage{chemfig}
\begin{document}
\schemestart
\chemfig{A}
\arrow(aa--){0}[-70,.5]
\chemfig{B}
\arrow(@aa.mid east--.mid west)
\chemfig{C}
\schemestop
\end{document}
chemfig
's schemes. Have you already checked those?