灭幼脲Ⅰ号及其类似物是一类取代苯酰苯基脲类杀虫剂,又称几丁质合成抑制剂。据报道用敌米灵(Dimilin)处理大白菜粉蝶幼虫后,其内表皮中放射性标记酪氨酸的结合受到抑制,从而阻碍了几丁质的合成。多种昆虫组织培养的生物化学研究,也发现 Chlorbenzuron No. 1 and its analogues are a class of substituted benzoylphenyl urea insecticides, also known as chitin synthesis inhibitors. The treatment of cabbage butterfly larvae with Dimilin was reported to inhibit the binding of radio-labeled tyrosine in the inner epidermis, thereby hindering the synthesis of chitin. Biochemical studies of various insect tissue cultures were also found