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Author Topic: Hydrogen peroxide-17O2 isotope  (Read 359 times)

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sasol

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Hydrogen peroxide-17O2 isotope
« on: June 15, 2018, 07:23:51 PM »

Recently I have found on ebay interesting H217O2  imaging contrast agent for NMR. Its isotope O-17 which provide high contrast in NMR analysis now im asking if anyone tries to use it as imaging agent with NMR ? Because its seems to be highly expensive one seller on ebay selling it for 1200usd for 100mg.


https://www.ebay.com/itm/17-O-labeled-H2O2-hydrogen-peroxide-H217O2-50-atom-17-O-10-wt-in-water/142833924205?hash=item214190b86d:g:2tIAAOSwVK9bI2z8
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Hacktacular

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Re: Hydrogen peroxide-17O2 isotope
« Reply #1 on: June 16, 2018, 06:31:58 AM »

Hi Sasol,

I'm no NMR guru but I'd expect it'd be used more for the preparation of compounds as a way to identify any oxygen atoms that might be present (other than inference and tedious guess and checking), so it might just find use as a reactant.  Another potential use might be in tracking metabolic pathways; ICP-MS for example can resolve atomic mass to four decimal places for example which allows for specific isotopes to be identified, having a O-17 might be useful for this kind of application (whether the hydrogen peroxide would again be used as a reactant for something more friendly to people though I could only guess).
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sasol

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Re: Hydrogen peroxide-17O2 isotope
« Reply #2 on: Yesterday at 03:08:34 AM »

Hi Hacktacular

Thank you for your reply.

Interesting very usefull application.  There is also O-18 - H2O2 posted recently.
does O-18 has same properties? Because its way more affordable :)

https://www.ebay.com/itm/18-O-labeled-H2O2-hydrogen-peroxide-H218O2-80-atom-18-O-10-wt-in-water/142836279002?hash=item2141b4a6da:g:VMcAAOSwdm1bJoGq

Thank You !
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crawlingmcedge

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Re: Hydrogen peroxide-17O2 isotope
« Reply #3 on: Yesterday at 04:11:09 AM »

I hope no one is actually thinking about seriously buying isotopes off a Slovenian seller on ebay. Anyone doing this actually deserves to be scammed for sheer stupidity.

I suspect 18 Oxygen is more used for Mass spec studies since it is Spin 0 and thus NMR silent.

17 O is spin 5/2 and would be NMR active for quadrupolar NMR.



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Babcock_Hall

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Re: Hydrogen peroxide-17O2 isotope
« Reply #4 on: Yesterday at 06:15:58 AM »

Many years ago, I used H2O17 in pulsed EPR experiments.  It was difficult to get water that was 50% O-17.  Also hydrogen peroxide solutions are not indefinitely stable. 
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