A13c solid-state nmr analysis of steroid compounds

It is interesting times in the world of NMR – there are a number of new permanent magnet NMR systems hitting the market. I have seen a number of announcements appearing on LinkedIn and other sites in recent days and then there was a question asked about Cryogen-free NMR systems on the AMMRL server. There is a little confusion out there about who is doing what and what these newer NMR systems are capable of. We ( Process NMR Associates and Aspect Italia) have been in the market with a high resolution 60 MHz system (3, 5, or 10mm sample tube) since 1997. Anasazi Instruments have been quitely selling hundreds of 60 and 90 MHz FT-NMR systems based on refurbished or newly manufactured Varian EM-360 and EM-390. New to the scene and making a splash with their marketing campaigns are Picospin (300 micron sample tube, 45 Mhz), Nanalysis (3, 5mm sample tube, 60 MHz). Finally, there is a system from Magritek/ACT (5mm sample tube, MHz) that has been re-packaged and is now out there in the world. These systems all produce spectra and can be used in the traditional manner that current supercon systems are utilized. Time-Domain (TD) NMR systems should not be confused with these platforms – TD-NMR spectrometer manufacturers include Cosa-Xentaur, Bruker, Oxford Instruments, SpinLock, MR-Resources – which are used typically for hydrogen content, rheology, simple phase measurements (solid fat, water in oil, oil in water, porosity measurements utilizing relaxation analysis.

A13c solid-state nmr analysis of steroid compounds

a 13c solid-state nmr analysis of steroid compounds

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