Product Information |
Product name |
Vitamin K2; Menaquinone-7; MK7; Menaquinone-4; MK4 |
CAS No. |
2124-57-4 |
Molecular Formula |
C46H64O2 |
Molecular Weight |
649.013 |
Quality Standard |
98% up, 1.3% up by HPLC |
Appearance |
1.3% is yellowish to yellow powder; 98% is yellow powder; 0.2% is light yellow powder; 1.3% is yellow oil; 1.5% is light yellow powder. |
COA of Vitamin K2 |
Item |
Specifications |
Results |
Purity (HPLC,Menaquinone-7) |
≥1.3%(>13000ug/g) |
1.32% |
Pharm.excipient(Carbohydrate) |
≥90.0% |
90.4% |
Identification |
Light Yellow Powder |
Light Yellow Powder |
pH |
5.5~8.0 |
7.8 |
Loss on drying |
≤10.0% |
8.5% |
Residue on ignition |
≤0.1% |
<0.1% |
Reducing sugar |
≤0.2% |
<0.2% |
Starch |
Negative |
Negative |
Fatty acid |
Negative |
Negative |
Heavy metals |
≤10ppm |
<10ppm |
Arsenic |
≤2ppm |
Complies |
Pesticides residue |
Negative |
Negative |
Total aerobic count (CFU/g) |
≤1000 |
Complies |
Yeasts & Molds (CFU/g) |
≤100 |
Complies |
Salmonella SP. |
Negative |
Negative |
E. Coli |
Negative |
Negative |
Usage |
Vitamin K2 has various derivates.The most common forms are
synthetic vitamin K2 as menaquinone-4 (MK-4) and natural vitamin K2 as menaquinone-7 (MK-7). It is of great importance to bone and cardiovascular health.
All K vitamins are similar in
structure, but differ in the length of the "side chain". The longer
the side chain, the better effect and efficiency. Consequently, the long-chain menaquinones (especially MK-7) are the
most desirable as they are nearly completely absorbed (body requires smaller
doses) and stay in the blood for the longest time.
The European Food Safety Authority (EFSA)published the positive opinion to
demonstrate causality between the dietary intake of vitamin K2 and the normal
function of the heart and blood vessels. Then Vitamin K2, MK-7 from natto have
been authenticated as new resources food. According to the data from WHO,the
long-chain menaquinones(especially MK-7)are considered the best vitamin K2. The
safety and function of Vitamin K2 (MK-7) has been approved.
Function of Vitamin K2
1. Nutritional supplements
Vitamin K2 is used as a food nutrient fortifier and can be used to formulate milk powder (only for children's milk powder, only for pregnant women's milk powder).
2. Health food
For health food, vitamin K2 has been included in the health food filing catalog, and currently only fermented vitamin K2 is allowed for filing. The functional ingredient of vitamin K2 (fermentation method), the daily upper limit of vitamin K2 (in terms of menadione heptaenone) is 100 g (14-17 years old, adults and pregnant women).