Benzylaminopurine (6‑BA; CAS No. 1214‑39‑7; formula C₁₂H₁₁N₅) is a white crystalline plant growth regulator with ≥ 98% purity. It is a synthetic cytokinin that promotes cell division, delays leaf senescence, and enhances fruit set and post-harvest freshness in vegetables, fruits, and ornamental plants.