L 1248 (OTTO) Lanthanum chloride, 99.99% Cas 10025-84-0 - used as a catalyst for the chemoselective preparation of cyclic and acyclic dithioacetals. L 1248 (OTTO) Lanthanum chloride, 99.99% Cas 10025-84-0 - used to prepare lanthanum aluminate (LAO) thin films, LaF3 nanocrystals, and bis(indolyl) methanes from indoles.