SABRE Hyperpolarization with up to 200 bar Parahydrogen in Standard and Quickly Removable Solvents.

hydrogen (-H)-based techniques are known to drastically enhance NMR signals but are usually limited by -H supply. This work reports -H-based SABRE hyperpolarization at -H pressures of hundreds of bar, far beyond the typical ten bar currently reported in the literature. A recently designed high-pressure setup was utilized to compress -H gas up to 200 bar.