“…N-methylcarbamates (BPMC, MPMC, MTMC, NAC, and XMC) are metabolized by MFO, and their major metabolites show no or lower anti-AChE activity than the parent chemicals (Cheng and Casida, 1973;Miyamoto and Fukunaga, 1971;Ohkawa et al, 1974;Oonnithan and Casida, 1968). Takahashi and colleagues (1987) reported that treatment with fenitrothion increased plasma concentrations of other N-methylcarbamates more than those of BPMC, although the potentiation of BPMC toxicity was strongest.…”