Vitamin K2 (Mk-7) Powder
Chemical Name: Menaquinone-7
Synonyms: MK-7, Vitamin K2
CAS No: 2124-57-4
Molecular Formula: C46H64O2
Molecular Weight: 649.00
Source: Natural Fermentation (Bacillus subtilis natto) or Synthetic (Optional)
Appearance Light yellow to yellow free-flowing powder
Odor Characteristic
Assay: (MK-7) 0.2%, 1.0%, 1.3%, 2.0%, 5.0% (Customizable)
All-Trans: MK-7 ≥98%
Test Method: HPLC
Carrier Maltodextrin, Starch, Gum Arabic (Customizable)
Solubility Dispersible in water (carrier dependent)
Storage: Store in a cool, dry place away from heat, moisture, oxygen, and direct sunlight
Shelf Life: 24 Months
Packaging: 1 kg Aluminum Foil Bag; 5 kg Bag; 25 kg Fiber Drum
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Product Introduction
Vitamin K2 MK-7 Powder Supplier | Menaquinone-7
Gold Herb supplies Vitamin K2 MK-7 Powder (Menaquinone-7) for dietary supplement manufacturers, nutraceutical companies, premix producers, and ingredient distributors.
MK-7 is a specific form of vitamin K2 used in nutritional formulations. It is found in standalone vitamin K2 products as well as combination formulas containing vitamin D3, calcium, magnesium, and other nutrients.
We provide Vitamin K2 MK-7 for sample evaluation and bulk purchasing, with specifications and documentation confirmed according to the requirements of each project.
Request a Sample | Get a Bulk Quote
Vitamin K2 MK-7 Specifications
| Parameter | Specification |
|---|---|
| Product Name | Vitamin K2 MK-7 Powder |
| Active Ingredient | Menaquinone-7 |
| Common Name | Vitamin K2 MK-7 |
| CAS No. | 2124-57-4 |
| Molecular Formula | C46H64O2 |
| Molecular Weight | 649.0 g/mol |
| Appearance | Yellow to light yellow powder |
| Water Solubility | Insoluble |
| Assay | According to agreed specification |
| Test Method | HPLC / applicable validated method |
| Shelf Life | 24 months |
| Storage | Cool, dry place; protect from light |
| Packaging | 1 kg foil bag / 25 kg drum |
The current product specification and batch COA should be used as the reference for commercial orders.

Available Vitamin K2 MK-7 Grades
MK-7 raw material can be supplied according to the required active concentration, delivery format, and isomer specification.
For a new project, buyers should confirm the following before selecting a grade:
- Required MK-7 assay
- All-trans requirement
- Carrier or delivery system, if applicable
- Finished-product dosage
- Manufacturing format
- Analytical requirements
If your formulation requires a specific concentration or all-trans level, include the target specification in your inquiry so the appropriate material can be confirmed.

What Is Vitamin K2 MK-7?
Vitamin K2 MK-7 is menaquinone-7, one particular member of the vitamin K2 family.
Vitamin K includes phylloquinone, commonly called vitamin K1, and several menaquinones classified as vitamin K2. MK-4, MK-7, and MK-9 are different compounds within this group.
For raw material purchasing, “Vitamin K2” alone does not identify the exact ingredient. A specification for MK-7 should state Menaquinone-7 / MK-7.
The commonly referenced CAS number for menaquinone-7 is 2124-57-4.
MK-7 Compared with Other Vitamin K Forms
| Raw Material | Chemical Name | Common Designation |
|---|---|---|
| Vitamin K1 | Phylloquinone | K1 |
| Vitamin K2 | Menaquinone-4 | MK-4 |
| Vitamin K2 | Menaquinone-7 | MK-7 |
| Vitamin K2 | Menaquinone-9 | MK-9 |
These forms should be treated as separate ingredients during formulation and purchasing.
If the finished product specification calls for MK-7, purchasing a generic vitamin K material can lead to a mismatch between the raw material and the finished-product label.

All-Trans Vitamin K2 MK-7
For MK-7, isomer composition can be an important specification.
Menaquinone-7 may occur in different geometric forms. Total MK-7 assay and all-trans MK-7 content therefore provide different information about the raw material.
When an all-trans MK-7 grade is required, the purchasing specification should define:
- Total MK-7 assay
- All-trans MK-7 content
- Isomer test method
- Acceptance range
This requirement should be confirmed before the material is approved for production.
Vitamin K2 MK-7 Applications
MK-7 powder is used in a range of nutritional products.
Vitamin K2 Supplements
Suitable for standalone K2 capsules, tablets, and other dietary supplement formats.
D3 + K2 Formulas
MK-7 can be used as the vitamin K2 component in products combining vitamin D3 and K2.
Multivitamins
It can be incorporated into broader vitamin and mineral formulations.
Mineral-Based Products
MK-7 may be included in formulas containing calcium, magnesium, or other nutritional ingredients.
Premixes
A defined MK-7 concentration can be used in premixes prepared for capsule, tablet, or other finished-product manufacturing.

Formulation Considerations
MK-7 is commonly incorporated at relatively low levels in finished products. Accurate dosing and uniform distribution are therefore important during blending.
Formulators should review:
- Raw material concentration
- Carrier composition
- Particle characteristics
- Mixing procedure
- Premix concentration
- Finished-product dosage
- Blend uniformity
- Packaging conditions
The appropriate grade depends on the manufacturing process and the composition of the finished formula.
Vitamin D3 + MK-7 Formulation
D3 + K2 products contain two separate active ingredients, so their raw material potencies need to be calculated independently.
For MK-7, the amount added to a batch depends on the concentration of the supplied ingredient and the target amount per serving.
Before pilot production, confirm:
| Formulation Item | Information Required |
|---|---|
| MK-7 | Assay / concentration |
| Vitamin D3 | Potency |
| Serving size | Target amount |
| Batch size | Production quantity |
| Premix | Required ratio |
| Testing | Finished-product method |
This approach helps the formulation team work from the actual raw material specification rather than an assumed concentration.
Laboratory Testing
Quality testing for Vitamin K2 MK-7 can cover both the active ingredient and other parameters defined by the product specification.
Depending on the agreed requirements, testing may include:
- Identity
- MK-7 assay
- All-trans MK-7
- Isomer profile
- Appearance
- Moisture
- Microbiological parameters
- Heavy metals
- Residual solvents, where applicable
The exact testing panel depends on the grade, application, and destination market.
COA and Technical Documents
A Certificate of Analysis (COA) provides the test results for a specific production batch.
Depending on the project, technical documentation may include:
- COA
- Product specification
- TDS
- SDS/MSDS
- Analytical information
- Storage conditions
- Packaging information
For supplier approval, buyers can compare the batch COA with the agreed specification before releasing the material for production.

Bulk Vitamin K2 MK-7 Supply
For a commercial quotation, provide the details that define the required material:
Ingredient: Vitamin K2 MK-7 / Menaquinone-7
Required assay: Target concentration
Isomer: All-trans requirement, if applicable
Quantity: Estimated order volume
Application: Capsule, tablet, premix, etc.
Packaging: Required pack size
Destination: Country or region
Documents: COA, TDS, SDS/MSDS, or other requirements
Samples can be arranged when a formulation team needs to test the ingredient before moving to production quantities.
Packaging
Typical packaging options include:
- 1 kg foil bag
- 5 kg package
- 25 kg drum
The final packaging format can be selected according to order quantity, storage conditions, and customer handling requirements.
Storage and Shelf Life
Vitamin K2 MK-7 should be stored according to the current product specification.
Keep the material in a cool, dry environment and protect it from unsuitable exposure to heat, moisture, and direct light.
The stated shelf life is 24 months under the specified storage conditions.

Why Choose Gold Herb for MK-7?
Gold Herb supplies specialty nutritional ingredients for manufacturers and ingredient distributors.
For Vitamin K2 MK-7 projects, the purchasing process can cover:
- Sample evaluation
- Specification confirmation
- Batch COA
- Technical documentation
- Packaging selection
- Bulk quotation
The approved specification can then be used as the reference for subsequent commercial orders.

Frequently Asked Questions
What is Vitamin K2 MK-7?
Vitamin K2 MK-7 is menaquinone-7, a specific form of vitamin K2 used in nutritional supplement formulations.
What is the CAS number of MK-7?
Menaquinone-7 is commonly identified by CAS No. 2124-57-4.
What is the difference between MK-4 and MK-7?
MK-4 and MK-7 are different menaquinones within the vitamin K2 family. They have different chemical structures and should be specified separately.
What does all-trans Vitamin K2 MK-7 mean?
It refers to a particular geometric form of menaquinone-7. If all-trans MK-7 is required, the relevant isomer specification should be confirmed analytically.
Is MK-7 water soluble?
MK-7 is generally insoluble in water. The formulation system should take this characteristic into account when selecting the finished-product format.
Can MK-7 be used with Vitamin D3?
Yes. MK-7 is commonly used as the vitamin K2 component in D3 + K2 nutritional products.
Can MK-7 be used in capsules?
Yes. It can be incorporated into capsule formulations as well as tablets and premixes.
What should I check on an MK-7 COA?
Review the product identity, MK-7 assay, applicable isomer information, physical properties, batch information, and other parameters included in the agreed specification.
Do you provide Vitamin K2 MK-7 samples?
Sample availability can be confirmed according to the requested specification and project requirements.
What information is needed for a bulk quote?
Provide the required MK-7 specification, all-trans requirement if applicable, quantity, application, destination, packaging, and documentation requirements.
Related Nutraceutical Ingredients
Gold Herb also supplies raw materials used in vitamin, mineral, nutraceutical, and healthy-aging formulations.
Related ingredients include:
Explore the Nutraceutical Ingredients range for additional formulation materials.
Request Vitamin K2 MK-7 Sample or Bulk Quote
Send your required MK-7 assay, all-trans specification, quantity, application, destination, and packaging requirement.
Gold Herb can confirm the suitable material and provide the relevant commercial information.
Email: info@newgoldherb.com
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