: Y 1144 (OTTO) Ytterbium(III) chloride, hydrate, 99.9% Cas 19423-87-1 - used as a catalyst in organic chemical synthesis. Y 1144 (OTTO) Ytterbium(III) chloride, hydrate, 99.9% Cas 19423-87-1 -used to track digestion in animals. The catalytic nature of this compound also has an application in DNA microarrays.