Dietary Supplements
The dominant use case for K2 MK-7. Lipid-carrier MK-7 fills cleanly into softgel and tablet matrices.
- Softgel capsules (oil fill)
- Bone-and-cardiovascular K2 stacks
- Vitamin K2 + D3 combinations
- Multivitamin oil phases
Mon–Fri 8AM–5PM CT · Established MCT & nutritional-ingredient distribution
Menaquinone-7 · CAS 2124-57-4 · MCT Carrier
Vitamin K2 MK-7 in Coconut MCT Oil
The longest-half-life K2 vitamer, pre-dispersed in a coconut-derived MCT carrier. Fat-soluble menaquinone-7 doesn't mix with water — it needs a lipid system to be formulated, dosed, and absorbed. Kraft Chemical pairs MK-7 with coconut MCT oil, drawing on our established MCT line, so supplement and functional-food formulators can drop a finished K2 premix straight into their batch.
Highly oil-soluble
Coconut-derived MCT carrier
Supplement-grade applications
Since 1935Trusted nutritional ingredients supplier
Overview
The K2 vitamer that stays in circulation
Vitamin K2 MK-7 (menaquinone-7) is the menaquinone with the longest aliphatic side chain at seven prenyl units — the structural feature that gives it the longest serum half-life of any K2 vitamer (~3 days) and makes it the form most studied in modern bone- and cardiovascular-health research.
MK-7 is strongly lipophilic and practically insoluble in water. To formulate it into a supplement, gummy, beverage, or fortified food, it has to be carried in a lipid matrix. Coconut-derived medium-chain triglyceride (MCT) oil is the standard carrier — it solubilizes MK-7 cleanly, helps protect it from oxidation, and supports the bioavailability that makes K2 worth supplementing in the first place.
Kraft Chemical already distributes MCT to U.S. food, supplement, and personal-care manufacturers. Adding MK-7-in-MCT premixes is a natural extension of that capability: the carrier is something we already source and qualify; what we layer on is the K2 active, the dispersion, and the documentation package that supplement formulators need to drop the ingredient into a regulated finished product.
Specific potency targets, MCT grade (refined vs unrefined coconut), and pack format are configured to the formulator's spec. Pricing, MOQ, lead time, and country-of-origin details are available on request through our sales desk.
Why MK-7 in MCT
Three reasons formulators specify this premix
Built on established MK-7 biochemistry plus Kraft Chemical's MCT distribution. Documentation supports each claim and ships on a per-lot basis.
~3 days
Longest K2 half-life
MK-7 has the longest serum half-life of any vitamin K vitamer — roughly three days, versus about 1.5 hours for MK-4. That translates into more stable steady-state K2 status at lower daily doses, which is why MK-7 has become the dominant K2 form in supplement formulations.
C8–C10
Coconut MCT carrier
Medium-chain triglycerides from coconut — predominantly caprylic (C8) and capric (C10) fatty acids — solubilize MK-7 fully and help protect the active from oxidative loss. The carrier itself is a recognized functional ingredient, not an inert diluent.
90+ yrs
Distribution discipline
Kraft Chemical has supplied U.S. manufacturers since 1935 with the documentation, certification, and lot-control practices an FDA-regulated supplement, gummy, or functional-food program needs. COA, specification sheet, and allergen statement available on request.
Applications
Where MK-7-in-MCT fits in a formulation
Once MK-7 is already in a stable lipid carrier, it slots into the dosage forms supplement and functional-food formulators are already running — softgels, gummies, emulsified beverages, fortified fats, animal nutrition premixes.
Gummies & Chews
Lipid-pre-dispersed MK-7 emulsifies into pectin or gelatin gummy bases without separation issues.
- Adult and child K2 gummies
- Multi-vitamin gummy oil phase
- K2+D3 combination chews
- Pectin and gelatin systems
Functional Beverages
Microemulsion or nano-emulsion delivery for shots, RTD beverages, and powdered drink mixes.
- Wellness shots & RTDs
- Bone-health beverage lines
- Emulsified drink concentrates
- Powdered drink K2 fortification
Fortified Foods
Lipid-phase K2 dosing into dairy, spreads, plant-based dairy alternatives, and bars.
- Dairy & plant-milk fortification
- Margarines and spreads
- Bone-health nutrition bars
- Bake-stable softgel fillings
Infant & Pediatric Nutrition
An area of active K2-research interest — MK-7 has been studied for early-life bone development.
- Pediatric supplement drops
- Toddler gummy formats
- Specialty infant formula research
- Clinical nutrition (formulator-led)
Animal Nutrition
K2 is increasingly used in companion-animal and equine joint/bone formulations.
- Companion-animal supplements
- Equine bone and joint blends
- Premixed lipid carriers
- Veterinary nutraceutical lines
Specifications
Documented chemistry, configurable potency
Vitamin K2 MK-7 is supplied as a defined chemical entity; the carrier system, potency, and pack format are configured per program. Lot-level COA, specification sheet, and allergen statement ship with material on request.
| Parameter | Value | Notes |
|---|---|---|
| Chemical Name | Menaquinone-7 (Vitamin K2 MK-7) | Naphthoquinone with heptaprenyl side chain |
| CAS Number | 2124-57-4 | PubChem CID 5282367 |
| Molecular Formula | C₄₆H₆₄O₂ | Free MK-7 (no carrier) |
| Molecular Weight | ~649 g/mol | Free MK-7 |
| IUPAC Name | 2-methyl-3-[(2E,6E,10E,14E,18E,22E)-3,7,11,15,19,23,27-heptamethyloctacosa-2,6,10,14,18,22,26-heptaenyl]naphthalene-1,4-dione | |
| Active Potency | Available on request | Typical premix ranges configurable |
| Carrier System | Coconut-derived MCT oil | Refined or unrefined, specify on RFQ |
| Appearance | Clear to pale-yellow oily liquid | Carrier and potency dependent |
| Solubility | Oil-soluble; insoluble in water | Highly lipophilic |
| Stability | Light- and oxidation-sensitive | Store cool, dark, sealed; nitrogen-blanket recommended for bulk |
| Country of Origin | Available on request | Manufacturer and COO disclosed with quote |
| Pack Sizes | Available on request | Configured to program volume |
Full COA, specification sheet, and allergen statement available with sample request · Custom potency and MCT grade configurable
Frequently Asked
Vitamin K2 MK-7 in coconut MCT — common questions
Answers to the questions supplement, nutraceutical, and functional-food formulators most often ask when evaluating menaquinone-7 premixed in a medium-chain triglyceride carrier.
Why is MK-7 supplied pre-dispersed in MCT oil rather than as a powder?
Vitamin K2 as menaquinone-7 (MK-7) is fat-soluble and practically insoluble in water. Pre-dispersing MK-7 in a coconut-derived medium-chain triglyceride (MCT) carrier enables uniform dosing into oil-phase formulations (softgels, gummies, fortified oils), supports bioavailability through the lipid carrier, and eliminates the dusting and homogeneity issues that come with handling a low-dose oil-soluble vitamin as a free powder.
What is the difference between vitamin K2 MK-7 and MK-4?
Both are forms of vitamin K2 (menaquinones), differing in side-chain length and pharmacokinetics. MK-4 has a short isoprenoid side chain and a serum half-life of roughly 1–2 hours; MK-7 has a longer side chain and a serum half-life of approximately 72 hours — the longest of any menaquinone. The extended half-life of MK-7 supports once-daily supplement dosing and steady serum levels.
Is the MK-7 fermentation-derived or chemically synthesized?
The MK-7 supplied by Kraft Chemical is fermentation-derived from Bacillus subtilis natto — the same biosynthetic source as the MK-7 found in traditional natto. This route yields the all-trans isomer, which is the biologically active form. Synthetic MK-7 typically produces a cis/trans mixture and is not preferred for supplement formulation.
How stable is MK-7 in coconut MCT — what is the shelf life?
MK-7 in the coconut MCT carrier has a 24-month shelf life when stored in original sealed packaging in a cool, dry place protected from direct light. Coconut MCT is oxidatively stable (no double bonds in the medium-chain fatty acids), which helps protect the MK-7 from peroxide-driven degradation. Certificate of Analysis per lot includes potency by HPLC, peroxide value, and microbial counts.
What documentation is available with each lot?
Each lot ships with a Certificate of Analysis (potency by HPLC, all-trans isomer ratio, peroxide value, microbial limits) plus, on request: Kosher, Halal, Non-GMO Project documentation, allergen statements, BSE/TSE statement, residual solvent declaration, and region-specific regulatory filings. Documentation for supplier-qualification programs is provided at the program level.
Kraft Chemical certifications & affiliations · Company-level credentials backing every line we distribute. Product-specific documentation ships per lot on request.
Independently audited to Cook+Thurber / NSF International for GMP, Codex/NACMCF HACCP, and Best Industry Practices. ISO 9001 registration FS80057. SQF participation satisfies GFSI-benchmarked food-safety requirements.
Documentation package
What ships with the sample, the quote, and the lot
Buyer audits and RFP responses are routine for K2 supplement programs. Here's what Kraft Chemical can put on a buyer's desk and what needs a sourcing conversation up front.
With sample or quote
- Product specification sheet
- Lot-level Certificate of Analysis (COA)
- Allergen statement (product, line & facility)
- Nutritional information per 100 g
- Safety Data Sheet (SDS)
Company-level on file
- FDA facility registration
- ISO 9001:2015 certificate · BSI FS80057
- SQF certificate (GFSI-benchmarked)
- Cook+Thurber / NSF third-party audit report
- Certificate of Insurance
- Food Defense Plan
On supplier qualification
- Kosher certification — request at quote stage
- Halal certification — request at quote stage
- Manufacturer & country-of-origin disclosure
Kosher and Halal certifications are tied to the upstream manufacturer of the MK-7 active and the MCT base. Kraft confirms certification scope per program before pricing.
Request a Quote
Sample, spec sheet, or full quote — let's scope it
Tell us your target potency, batch size, and MCT-grade preference. Our sales desk will route the inquiry to the right product manager and respond within one business day.
- Samples available for qualified supplement and food formulators
- Configurable MK-7 potency in coconut MCT carrier
- Specification sheet, COA, and allergen statement on request
- Backed by Kraft Chemical's established MCT distribution capability