Two haptens of MCPA(M), 6-[((2-methyl-4-chlor) phenoxy aceto) amino] hexanoic acid (MC) and 4-[((2-methyl-4-chlor) phenoxy aceto) amino]butanoic acid(MB) were synthesized with MCPA and amino-hexanoic acid or amino-butanoic acid.

• 以除草剂2甲4氯(MCPA,简写为M)、氯化亚砜、氨基己酸和氨基丁酸等为起始原料,经两步化学反应分别合成了两种MCPA半抗原:6-(2-甲基-4-氯苯氧乙酰基)氨基己酸(MC)和4-(2-甲基-4-氯苯氧乙酰基)氨基丁酸(MB)。