Supplying analytical reference standards, quality control methods and related analytical testing services for vitamin K2, menaquinone-7 (MK-7) in raw materials and finished goods, ChromaDex Corporation, Irvine, CA, has entered a global agreement with Kappa Bioscience AS, Oslo, Norway. Vitamin K2 is shown to have significant importance for optimal utilization of calcium in the body related to bone and cardiovascular health.