Vitamin K2 is also called menaquinone, K stands for Koagulation. Vitamin K2 powder is insoluble in water, soluble in organic solvents and vegetable oil. Its CAS number is 11032-49-8 and the molecular formula is C31H40O2.
Vitamin K2 has several different subtypes, the most important ones are short-chain MK-4 and long-chain MK-7. M stands for menaquinone, the K stands for vitamin K, the number represents the number of isoprenoid side chain residues.
