Description Packaging 1, 2, 25 g in glass bottle 50, 250 mg in glass bottle Application Effective catalyst for ylide formation. Homogeneous catalyst. Used in an efficient synthesis of ß-hydroxy-α-arylacrylates involving the decomposition of diazoetster intermediates with concomitant 1,2-arylmigration. Packaging Bottomless glass bottle. Contents are inside inserted fused cone.