Kirenol (Standard) is a reference standard for research and analysis in studies involving Kirenol. 1. Kirenol (Kirel) has anti-oxidant, anti-inflammatory, anti-allergic, and anti-arthritic activities. 2. Kirenol is effective against gram-positive bacteria. 3. Kirenol possesses antitumor action on human chronic myeloid leukemia K562 cells in vitro. 4. Kirenol is capable of promoting osteoblast differentiation in MC3T3-E1 cells through activation of the BMP and Wnt/β-catenin signaling pathways. 5. Kirenol treatment reduces pro-inflammatory cytokine secretion, increases anti-inflammatory cytokine production, inhibits cell proliferation and induces apoptosis of CII-specific lymphocytes in vitro.