MUG question

Jonny P jprocter at
Sat Jun 30 13:59:29 EST 2001

MUG is found as it's hydrate...if it loses too much water of crystallisation
the free 4MU content seems to increase as the compound becomes less 'stable'

try  as a good source of enzyme substrates


Fun Science <biotech at> wrote in message
news:N0L_6.108453$W02.1981144 at
> Hi,
> MUG sold by Sigma states on page 674.
> 4-methylumbelliferyl-beta-D-Glucuronide
> FW 352
> MUG is also sold as
> 4-methylumbelliferyl-beta-D-Glucuronide, dihydrate
> with a FW of 2 water molecular higher.
> For diagnostic purposes and assay of e.coli in
> water etc... what is the difference really?  Will this
> affect the experiment and assays?
> Do some companies sell molecules that are hydrate
> form and not indicate this in the certificate of analysis?
> Any comments.?

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