N-Methoxy-N-methyltrifluoroacetamideN-Methoxy-N-(trifluoroacetyl)methylamineN-Methoxy-N-methyl-2,2,2-trifluoroacetamideN-Methoxy-N-methyltrifluoroacetamide 98%N-Methyl-N-methoxytrifluoroacetamideN-甲氧基-N-甲基-2,2,2-三氟乙酰胺N-甲基-N-甲氧基三氟乙酰胺N-Methoxy-N-methyl-2,2,2-trifluoroacetamide