2.5.1.44 -18 - storage as acetone dry-powder, stable for several months 288702 2.5.1.44 4 - - 288700 2.5.1.44 4 - stable for at least 2 weeks in the presence of 1 mM NAD+ 288698 2.5.1.44 4 - stable for at least several weeks 288699