Quite a large listing of deuterated compounds and Carbon-13 and Nitrogen-15 labelled compounds. In English or German or French.

Manufacturer of stable isotope labeled compounds and some fine deuterated solvents too.

Makes some of the most unique and novel labeled compounds

Nearly a complete line of enriched biochemicals. Nice selection of fatty acids, enriched with C13.

Supplier of NMR shift reagents

Stable isotope labeled biopolymers (H2, C13, N15)