Menaquinone 9 (MK-9) is a vitamin K2 analog that has been found in various bacteria, including E. coli. MK-9 is UV-sensitive and binds to soluble nitrate reductase, a component of the bacterial electron transport chain.

In vivo, MK-9 increases plasma prothrombin concentration in vitamin K-deficient rats.

523-39-7

C56H80O2

785.23

Menaquinone 9;MK-9;Vitamin K2(45);Menaquinone 9

Chloroform:100 mg/mL
Powder: -20°C for 3 years
In solvent: -80°C for 2 years