Product Name: Vitamin K2(35) Molecular Formula: C46H64O2 Molecular Weight: 649 Appearance: White powder Purity: 1%-98% CAS Number: 2124-57-4 Supplier: ZhenYiBio Vitamin K2 is part of the Vitamin K family,a group of fat-soluble vitamins.(That means they are stored in the gastrointestinal tract and delivered to body in fat globules call chylomicrons.)You have probably heard of Vitamin K,which is crucial for the production of proteins that we need for coagulation,or blood clotting.Without Vitamin K,we would not stop bleeding.That connection was discovered in 1929,and it earned Henrik Dam and Edward Doisy the Nobel Prize in 1943.