Natural Science Forum / Chemistry / Organic Synthesis / August 2003

I am a Physicist trying to use Cysteamine (2-Mercaptoethylamine) as an
anti-bleach agent.  I know Cysteamine is supposed to get oxidized very
easily (and thus loosing its anti-fade ability).  If my bottle of
Cysteamine (from Aldrich) seems all moist inside, is the Cysteamine

Can someone point me in the direction of a reference to the synthesis
of Rhodamine 560?  I've found the alkylated Rhodamines (575, 610,
etc.) but I cannot find a prepr for 560.

I'm looking for Autocad/autosketch CAD library for general and
normalized labware symbols, such as NS cone, DN flanges, coolers,
joints, flasks etc.
Anyone know where I can find it?

                             I was wondering if anyone here knows of an
alternative base bath formulation for cleaning lab glassware.  Currently our
lab uses the standard KOH in 95% ethanol.  It works, but is harsh on
glassware and due to heavy use, requires frequent re-charging or ...

For three days now I've been struggling to separate the enantiomers of
cryptone (4-isopropylcyclohexenone) using a chiral column on our HP
5890 Series II GC. No matter what conditions I try, the enantiomers
won't separate, the best I get is a broad (rather than sharp) peak.