D 7123 (OTTO) Dimethyl chloromalonate, 98% Cas 28868-76-0 - used in the stereoselective synthesis of highly functionalized nitrocyclopropanes. D 7123 (OTTO) Dimethyl chloromalonate, 98% Cas 28868-76-0 - used in one-pot synthesis of tetra-alkoxycarbonylallylidenetriphenylphosphoranes.