mannoheptulose is avacado extract and am interested in knowing where i
can purchase or obtain it

There are couple of companies that provides mannoheptulose to
scientists. Because Mannoheptulose is a hexokinase inhibitor - not an
everyday chemical at that - it may be necessary to setup an account
with the company. You may also have to provide reason(s) why you need
the chemical, i.e. for research purposes, etc.

One company is Pfanstiehl; for order information you can call their
toll-free number 1.800.383.0126. Description is on this page:
http://www.pfanstiehl.com/produc2/display.cfm?ProdName=D-Mannoheptulose&ProdCode=M-110

Another is Fisher Chemicals (largest and most reliable chemical
manufacturer). You can contact them through 1-800-766-7000. Their
website is at www.fishersci.com and search "mannoheptulose."

Keep in mind that purified mannoheptulose is quite expensive: 100mg
usually costs around $3000.

Hope this helped.

Hello.

It appears that this question has already been answered by dhpark-ga,
so I'll just add an interesting reference to the use of this extract.

"When a purified avocado extract called mannoheptulose was added to a
number of tumor cell lines tested in vitro by researchers in the
Department of Biochemistry at Oxford University in Britain, they found
it inhibited tumor cell glucose uptake by 25 to 75 percent, and it
inhibited the enzyme glucokinase responsible for glycolysis. It also
inhibited the growth rate of the cultured tumor cell lines. The same
researchers gave lab animals a 1.7 mg/g body weight dose of
mannoheptulose for five days; it reduced tumors by 65 to 79 percent.14
Based on these studies, there is good reason to believe that avocado
extract could help cancer patients by limiting glucose to the tumor
cells"

Search: www.google.com : mannoheptulose +supplier

Currently Glycotem GmbH is the sole producer of this rare seven carbon sugar.

checkout the website www.glycoteam.com

Sales Department
Glycoteam GmbH
Nordkanalstr. 58 D-20097 Hamburg.
sale@glycoteam.com

Glycoteam chemists are specialised in sugar and organic chemistry.