Chemistry Forums for Students > Organic Spectroscopy
Hydrogen peroxide-17O2 isotope
sasol:
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.
Hacktacular:
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).
sasol:
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 :)
Thank You !
crawlingmcedge:
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.
Babcock_Hall:
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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