Vitamin K2 (MK4)
| Parameter | Specification |
|---|---|
| Product Name | Vitamin K2 (MK4) |
| CAS Number | 863-61-6 |
| Molecular Formula | C31H40O2 |
| Molecular Weight | 444.65 g/mol |
| Appearance | Yellow to orange crystalline powder |
| Assay (HPLC) | ≥98.0% |
| Solubility | Soluble in ethanol, acetone, vegetable oils; practically insoluble in water |
| Package | 1 kg, 5 kg, 10 kg, 25 kg drums |
Need help? Contact our team

Synonyms: Menaquinone-4, Vitamin K2, MK-4, Menatetrenone, 2-Methyl-3-all-trans-tetraprenyl-1,4-naphthoquinone, Vitamin K2 (MK4)
Vitamin K2 (MK4) has become a key ingredient for formulators targeting bone and cardiovascular health. Unlike the more common MK-7, MK-4 is a short-chain menaquinone with a distinct pharmacokinetic profile—rapid absorption and quick tissue distribution. Its popularity surged after Japan approved menatetrenone for osteoporosis treatment, and it now appears in premium bone health supplements, cardiovascular support formulas, and functional foods.
Chemically, MK-4 is a naphthoquinone with a four-unit isoprenoid side chain. It occurs naturally in animal products like egg yolk, liver, and butter, but commercial production relies on chemical synthesis to achieve high purity. At LyvBio, we supply synthetic MK-4 with ≥98% purity (HPLC), ensuring consistent quality for your formulations.
Vitamin K2 (MK4) is a fat-soluble vitamin essential for activating osteocalcin and matrix Gla protein, which regulate calcium deposition in bones and arteries. Its mechanism involves gamma-carboxylation of glutamate residues in these proteins, enhancing their calcium-binding capacity. This makes MK-4 particularly valuable for bone mineral density and arterial elasticity.
Our MK-4 is synthesized through a multi-step process, yielding a crystalline powder that is standardized to ≥98% purity. It is available in various packaging sizes to suit your production needs.
| Test Item | Specification |
|---|---|
| Identification | IR and UV spectra conform to reference |
| Loss on Drying | ≤0.5% |
| Heavy Metals | ≤10 ppm |
| Microbial Limits | Total aerobic count ≤1000 CFU/g; Yeast & mold ≤100 CFU/g; E. coli absent |
| Organic Impurities | Any individual impurity ≤0.5%; Total impurities ≤1.0% |
Our MOQ for Vitamin K2 (MK4) is 1 kg. For larger quantities, we offer competitive pricing and flexible packaging options.
For stock items, delivery is 3-5 business days after order confirmation. We ship globally via express couriers and air freight.
Yes, we provide a COA for each batch. Samples are available upon request; please contact our sales team for details.
We offer 1 kg, 5 kg, 10 kg, and 25 kg drums. Custom packaging can be arranged for bulk orders.
send us your specification for a quotation.
Room,5-0203, Unit 5, Beiyuanmen Street,Xi'an,Shaanxi,China