4-Chlorophenoxyacetic acid (4-CPA) —also known as *p*-chlorophenoxyacetic acid or by trade names such as Fangluosu, Fanqieling, Zuoguoling, and Cushengling—is a broad-spectrum plant growth regulator widely used in agriculture, horticulture, and medicine. Its core functions and effects include: 1. Pr
4-Chlorophenoxyacetic acid (4-CPA) —also known as *p*-chlorophenoxyacetic acid or by trade names such as Fangluosu, Fanqieling, Zuoguoling, and Cushengling—is a broad-spectrum plant growth regulator widely used in agriculture, horticulture, and medicine. Its core functions and effects include: 1. Pr
