What is Vitamin K2?

Vitamin K2 belongs to the broader Vitamin K group, a family of fat-soluble compounds essential for human health. As fat-soluble vitamins, they are absorbed through the digestive system and transported via lipid carriers known as chylomicrons to various tissues in the body. Many are familiar with the role of Vitamin K in blood coagulation—specifically, its involvement in synthesizing the clotting factors necessary to stop bleeding. This vital function was first identified in 1929, a breakthrough that later earned Henrik Dam and Edward Doisy the Nobel Prize in Physiology or Medicine in 1943.

Vitamin K exists in two primary natural forms: Vitamin K1 (phylloquinone) and Vitamin K2 (a series of menaquinones). The distinction between the two lies in their molecular structure. While Vitamin K1 contains a single isoprenyl unit, Vitamin K2 consists of multiple repeating units, referred to as MK-n (where n indicates the number of isoprene residues). Among the most biologically potent and widely studied forms is MK-7 (menaquinone-7), known for its long half-life and effective absorption.

Product Photo and Mechanism of Action:

Vitamin K2, particularly in its MK-7 form, plays a critical role in activating vitamin K-dependent proteins such as osteocalcin and matrix Gla-protein (MGP). Osteocalcin binds calcium in the bloodstream to bone tissue, supporting skeletal health. MGP helps prevent the calcification of arteries and soft tissues, contributing to cardiovascular wellness. This dual action positions Vitamin K2 as a vital nutrient for maintaining strong bones and flexible blood vessels.

Specification:

  • Chemical Name: Menaquinone Vitamin K2 (MK-7)
  • Synonyms: Menaquinone-7; Vitamin K2 MK-7
  • CAS No.: 2124-57-4
  • Purity: Up to 99%
  • Appearance: White to off-white powder
  • Application: Widely used in dietary supplements, pharmaceuticals, and functional foods; also employed in organic synthesis
  • Molecular Formula: C₄₆H₆₄O₂
  • Molecular Weight: 648.491 g/mol
  • Boiling Point: Approximately 200°C at 0.0002 mmHg (with partial decomposition)
  • Melting Point: 53–55°C
  • Polar Surface Area (PSA): 34.14 Ų
  • LogP (Octanol-Water Partition Coefficient): 14.097

Certification of Analysis (COA):

Chemical NameMenaquinone Vitamin K2 Mk7
SynonymsMenaquinone 7;
Vitamin K2 MK-7
CAS NO.2124-57-4Purity99%
AppearanceWhite PowderApplicationUsed as organic synthesis
Molecular FormulaC46H64O2Molecular Weight648.49100
Boiling Point200ºC at 0.0002 MM HG (SOME DECOMP)Melting Point54ºC
PSA34.14000LOGP14.09740

COA:

Product Name:Vitamin K2 MK7(Menatetrenone MK-7)Grade:JP15
Specification:1%~98%Test Method:HPLC
ParameterSpecificationTest Method
AppearanceOff-white to pale yellow powderInternal method
MK-7 Content≥1.0%HPLC
Melting Point (°C)53–55GB/T 617
ConditionNo off-odors or tasteInternal method
Reducing Sugar (%)≤0.2GB/T 5009.7
Heavy Metals (Pb, ppm)≤20GB 5009.74
Arsenic (ppm)≤2GB 5009.11
Lead (ppm)≤2GB 5009.12
Mercury (ppm)≤0.3GB 5009.17
Cadmium (ppm)≤0.3GB 5009.15
Solvent Residue (Ethanol)≤500 ppmUSP 467
Total Plate Count (CFU/g)≤1000GB 4789.2
Yeasts & Molds (CFU/g)≤50GB 4789.15
Salmonella sp.Absent in 25gGB 4789.4
StaphylococcusAbsent in 25gGB 4789.10
E. Coli (MPN/g)Absent in 25gGB 4789.3

Delivery & Packaging:

Our standard packaging options include:

  • 1 kg foil bags (inner sealed)
  • 25 kg export-grade HDPE drums (net weight)

Custom packaging solutions are available upon request to meet specific customer or regulatory needs.

For delivery, we offer flexible shipping methods:

  • Courier (Express): Ideal for small, urgent orders
  • Air freight: Fast international transport
  • Sea freight: Cost-effective for bulk shipments worldwide

Additional details, including packaging visuals and handling recommendations, can be provided upon inquiry.

If you have any questions or would like to request a quote for Vitamin K2 (MK-7) powder, please contact us at: [email protected]

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