Vitamin K2 powder is also known as menadione, among which MK-7 is derived from synthesis and fermentation. Types of K2 include tetraene menadione (MK-4), hexene menadione (MK-6), and heptaene menadione (MK-7). Studies have shown that MK-7 can be degraded to form MK-4.
Compared with other forms, the biological activity of MK-7 is better than that of MK-4 and K1. MK-7 has higher bioavailability and longer half-life than MK-4. And MK-7 has good absorption efficiency and is also the main dosage form at present.
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Vitamin K2

MENAQUINONE-7, MK-7 98%

Characterisitic	Unit	Specifications	Results	Method of Analysis
Appearance		Yellow crystalline powder	Complies	Internal
Condition		No offensive taste and smell	Complies	Internal
Assay:Vitamin K2(MK-7)	%	98.0-102.0	99.16	HPLC
Cis-isomer	%	≤1.0	0	HPLC
Melting Point	℃	53-55	54.0-55.0	GB/T 617
Moisture	%	≤0.5	0.35	GB 5009.3
Residue on Ignition	%	≤0.1	0.03	GB 5009.4
Lead	mg/kg	≤2.0	＜0.025	GB 5009.12
Mercury	mg/kg	≤0.3	＜0.003	GB 5009.17
Arsenic	mg/kg	≤1.0	＜0.02	GB 5009.11
Solvent Residue Acetone	%	≤0.5	0.364	CP2020
Isopropyl Alcohol	%	≤0.5	0.188	CP2020
Colonies Number	CFU/g	≤1000	＜10	CP2020
Yeast and Molds	CFU/g	≤50	＜10	CP2020
Salmonella SP.		0/10g	Not detected	CP2020
Staphylococcus		0/1g	Not detected	CP2020
E.Coli		0/1g	Not detected	CP2020

1. It has the effect of preventing and treating osteoporosis. MK-7 can increase bone density, improve bone quality, bone strength and collagen production. MK-7 can promote bone formation by stimulating osteoblast differentiation and upregulating bone marker gene expression.
2. MK-7 is associated with reducing cardiovascular and cerebrovascular calcification and coronary artery calcification.

Vitamin K2