M 2035 (OTTO) Methyl chloroacetate, 99% Cas 96-34-4 - used in the preparation of (carboxymethyl) trimethylammonium chloride esters. M 2035 (OTTO) Methyl chloroacetate, 99% Cas 96-34-4 - used in the synthesis of octakis-(carbethoxymethoxy)calix[8]arene.