... ; (3) GBL is the intermediate of plant growth stimulator and insecticide. (4)GBL is a good antioxidant, plasticizer, extractant, adsorbent, dispersant ... ; (3) GBL is the intermediate of plant growth stimulator and insecticide. (4)GBL is a good antioxidant, plasticizer, extractant, adsorbent, dispersant ...