m-Tolyl Phosphorochloridate is an intermediate in synthesizing Bis(m-cresyl) p-Cresyl Phosphate-d7(B419227), a labelled Bis(m-cresyl) p-Cresyl Phosphate (B419225), which is an isomer of Tricresyl phosphate (TCP) used as an anti-wear additive in aircraft turbine engine oil.