OmniPur® Xylene Cyanol FF - CAS 2650-17-1 - Calbiochem Tracking dye for DNA gels. Molecular biology grade. Specifications: Moisture (H2O): 10% max Molar absorptivity Em (614 nm, methanol): 30000 min Intended for laboratory and manufacturing use only. Not for drug, food, or household use. 产品信息 Form Blue-green powder CAS number 2650-17-1