| Product Name | Vitamin K2 MK-7 |
|---|---|
| CAS Number | 2124-57-4 |
| Molecular Formula | C₄₆H₆₄O₂ |
| Molecular Weight | 648.99 g/mol |
| Appearance | Pale yellow to yellow oil or powder (on carrier) |
| Assay (HPLC) | ≥ 98.0% |
| Loss on Drying | ≤ 1.0% |
| Residue on Ignition | ≤ 0.5% |
| Heavy Metals | ≤ 10 ppm |
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Vitamin K2 MK-7 (Menaquinone-7) is the most bioavailable and longest-acting form of vitamin K2, belonging to the menaquinone family. It is naturally produced by bacterial fermentation and is found in fermented foods such as natto, a traditional Japanese soybean product. MK-7 is distinguished from other vitamin K forms by its longer isoprenoid side chain, which confers superior absorption, extended half-life, and more sustained tissue distribution.
Vitamin K2 serves as an essential cofactor for γ-glutamyl carboxylase, an enzyme responsible for the post-translational carboxylation of specific glutamic acid residues in vitamin K-dependent proteins (VKDPs). These include osteocalcin (involved in bone mineralization) and matrix Gla protein (MGP, a potent inhibitor of vascular calcification). By activating these proteins, vitamin K2 plays a critical role in calcium homeostasis, directing calcium into bone tissue while preventing its deposition in arterial walls.
MK-7 is the preferred form for supplementation due to its once-daily dosing convenience, superior bioavailability, and proven efficacy in clinical studies. It is widely used in bone health, cardiovascular health, and healthy aging formulations.
Superior bioavailability: Longer side chain enhances absorption and tissue distribution.
Extended half-life: Approximately 72 hours, supporting once-daily dosing.
Bone health: Activates osteocalcin, promoting bone mineralization.
Cardiovascular protection: Activates MGP, inhibiting arterial calcification.
Synergistic with vitamin D3: Cooperates in calcium trafficking and utilization.
| Compound | CAS No. | Relationship |
|---|---|---|
| Vitamin K2 MK-7 | 2124-57-4 | Long-chain menaquinone, most bioavailable |
| Vitamin K2 MK-4 | 863-61-6 | Short-chain menaquinone, synthetic form |
| Vitamin K1 (Phylloquinone) | 84-80-0 | Plant-derived, hepatic clearance |
| Vitamin K3 (Menadione) | 58-27-5 | Synthetic precursor, not for direct human use |
| Parameter | Specification |
|---|---|
| Purity (HPLC) | ≥ 98.0% |
| Identification | UV spectrum conforms to reference |
| Isomeric Purity (All-trans) | ≥ 95.0% |
| Loss on Drying | ≤ 1.0% |
| Residue on Ignition | ≤ 0.5% |
| Heavy Metals (as Pb) | ≤ 10 ppm |
| Arsenic (As) | ≤ 1 ppm |
| Microbial Limits | Conforms to USP/EP standards |
Monthly capacity: 50+ kg (pure oil), 1,000+ kg (powder blends)
Lead time: 3–5 days (samples), 10–15 days (bulk)
Documentation: COA, MSDS
Packaging: 1 kg, 5 kg, 10 kg, 25 kg (powder on carrier)
280 Main Street, Xian, Shaanxi, China
LyvBio Co., Ltd.
Email: info@lyvbio.com
Website: https://www.lyvbio.com
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