This page remains available mainly as an historical document

Most or all of the features are no longer available via the CDS/DL website since provision of the EPSRC UK national Chemical Database Service was taken over by the Royal Society of Chemistry in January 2012.

Some related features may be available via the RSC/CSD portal. For details of what is currently available on the CDS/DL website and also links to the RSC/CDS portal follow the link to the CDS/DL Homepage.

The information below was produced before January 2013 and may be incorrect at the present time.

Secure File Transfer


WinSCP is an open source (free) SFTP client for Windows. Its SSH protocol core is based on PuTTY. Its main function is the secure file transfer between a local and a remote computer. Telnet and Rlogin are old protocols offering minimal security and should not be used.

It can be downloaded from the WinSCP website

Once installed (only 6MB), start the program and fill in the connection details.

From the Session menu, type in     for host name.

(the port number is probably
already set to 22)

Type in User name and password    

File protocol should be left as

        From the SSH menu,
check that the
Preferred SSH protocal version
is set to 2.

From the Preferences menu,
choose either Norton Commander
or Explorer like.

You can also change a few
general options if you want to.

SAVE your session

You can then log on by
clicking the Login button

  Next time you open WinSCP
it should show stored sessions.

Double-click on one of them
to open a connection.

This is the Norton Commander interface.

Simply drag and drop files between
client and host.



The Mac has both sftp and scp available by default. They are run from an xterm window. We recommend sftp as it behaves like a normal command line ftp.

To log in with userId zzzz, use

$ sftp

and then say yes to the warning about being unable to verify the authenticity of the host (first time only) and enter password.

Once logged in the following commands are the most useful :