CTAN has a new package: chemfig

[CTAN Announcements]

This should within a day be at your local mirror.

Jim Hef{}feron

..........................................................................

The following information was provided by our fellow contributor:

Name of contribution: chemfig
Version number: v0.1
Author's name: Christian Tellechea
Location on CTAN: /macros/latex/contrib/chemfig
Summary description: Draw molecule with an easy syntax
License type: lppl

Announcement text: 
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ChemFig v0.1

  2010/06/23
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Among other features, this package provides
the following command:
     \chemfig{<code>}
This command draws 2D molecules with the
tikz package. The <code> contains
instructions for the drawing.
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This package is located at 
   http://tug.ctan.org/tex-archive/macros/latex/contrib/chemfig
.  More information is at
   http://tug.ctan.org/pkg/chemfig
(if the package is new it may take a day for that information to 
appear).  We are supported by the TeX Users Group http://www.tug.org .  
Please join a users group; see http://www.tug.org/usergroups.html .