BOC Sciences has become the largest supplier of pseudoUridine in the world with the most production capacity. Our annual output of pseudoUridine is currently over 500 kg. Its analogue - N1-MethylpseudoUridine (CAS 13860-38-3), is also our key product and has been used as raw material in the mRNA vaccine against COVID-19. We have been supplying the materials to the current production of COVID-19 mRNA vaccines with recognized quality.