May 8, 2009
by Ryan Sasaki, NMR Product Manager, ACD/Labs
This is a continuation of a series of posts that began here.
In my last post, I promised to address how, by simply spending 2 minutes re-cutting their integrals, a chemist can extract much more valuable information from their spectra.
The #1 thing in our NMR software that blows chemists away is the production of the following:
1H NMR (DMSO-d6) Shift d: 7.90 – 7.95 (m, 2H), 7.79 (s, 1H), 7.45 (d, J = 8.6 Hz, 1H), 7.33 (dd, J = 8.6, 1.8 Hz, 1H), 4.30 (q, J = 7.1 Hz, 2H), 4.21 (q, J = 7.1 Hz, 2H), 2.53 (s, 1H), 1.25 (t, J = 7.0 Hz, 3H), 1.24 (t, J = 7.1 Hz, 3H)
To elucidate and format this information for experimental sections in patents, reports, and publications, this is a very time consuming process by hand.
Can software make it easier?
This capability has been available in our software for a long time. However, in older versions of our software, while it was much easier than doing it by hand, it was a little time-consuming and not obvious how to do this. For example you would have to first pick your peaks in peak picking mode, then you would have to integrate those peaks in integration mode, and finally you would enter Multiplet Mode and create those multiplets.
As I’ve already mentioned, Chemists like to re-cut their integrals to make them look nice and normalized. Well now, when chemists do this procedure they are also peak picking and defining multiplet patterns and extracting coupling constant on the fly. Below is an 11 second video clip showing this capability in action.
Prior to the implementation of this feature, using our software to create these reports was something that was done around patent-writing time. If a patent was being written and experimental sections were needed, the chemist would go back to find their old spectra, and create these reports then.
Now that this process is so quick, easy, and intuitive, I’ve talked to many chemists around the world who are creating multiplet reports for virtually every spectrum they acquire. They can then paste their multiplet information in a report or ELN, and it will save them time in the patent writing process down the road.
And that’s not the only benefit chemists can potentially get from extracting this information each time they acquire a spectrum. I’ll talk about another, next time.
I wish all the Moms out there a Happy Mother’s Day!
Thank you my friend 🙂 I will come back to read more from you!