Latrunculin A Ultra-pure; inhibits actin polymerization Inhibits actin polymerization, microfilament organzation and microfilament-mediated processes. Acts via a different mechanism and 10- to 20-fold more potently than cytochalasins. Inhibits phagocytosis by macrophages. Exposure to 0.2 mg/ml for one hour produces maximal change in cell morphology. Product Specification Formula: C22H31NO5S MW: 421.6 CAS: 76343-93-6 MI: 14: 5378 Purity: ≥95% (HPLC) Appearance: White to yellow waxy solid. Hazard: HARMFUL. Solubility: Soluble in DMSO (25mg/ml) or 100% ethanol (25mg/ml). Long Term Storage: -20°C Use/Stability: Stable for 1 year after receipt when stored at -20°C. Stock solutions are stable for up to 3 months when stored at -20°C. Handling: Protect from light.