27th August 2008

Dear colleagues,

We are trying to separate the cis/trans isomers of
1,2-dialkylcyclohexanes by HPLC, the aim ultimately being to obtain up
to 100 milligrams of each isomer. Slight separation is achieved on a
Cronusil Triple-E C18 column with acetonitrile (see attached pdf) but
this is insufficient to consider a preparative separation. Preparative
GC might work but we no longer have the facility here. Any suggestions
on alternative HPLC columns are very welcome. Thank you for your time.

Kind regards,

Tony Herlt.

--
----------------------
Tony Herlt
Research School of Chemistry
Building 35, Australian National University campus
Science Road, Acton
Canberra, ACT 2601
Australia

phone: +61 (0)2 6125 8339
mobile: 0404 823 159
fax: +61 (0)2 6125 0750
e-mail: herlt@...
----------------------



[Non-text portions of this message have been removed]