An useful18F labelled intermediate 4-[18F] fluorobenzaldehyde is prepared from trimethylammoniumbenzaldehyde triflate,and the labeling procedure is optimized by verti-cal-method.

• 用三氟甲基磺酸-4-三甲基铵苯甲醛作标记前体制备了一种用途广泛的18F标记中间体4-[18F]氟苯甲醛,并用正交实验法对标记条件进行了优化。