M 2595 (OTTO) 4-Methylbenzoyl chloride, 98% Cas 874-60-2 - used to prepare antigen, Tolyl-amido-human serum albumin. M 2595 (OTTO) 4-Methylbenzoyl chloride, 98% Cas 874-60-2 - used as a reagent to synthesize (+)-Yashabushitriol, derivatives of Desloratadine.