It is sometimes calledvitamin k3,although derivatives of naphthoquinone without the side chain in the 3-position cannot exert all the functions of the KVitamins. Menadione is a vitamin precursor of K2 which utilizes alkylation to yield menaquinones (MK-n, n=1-13; K2 vitamers), and hence, is better classified as a provitamin.
It is also known as "menaphthone".
| ITEM | STANDARD |
| APPEARANCE | Yellowish crystalline powder |
| PURITY(%) | >= 96.0 TEST METHOD UV |
| MENADIONE (%) | >= 43.0 TEST METHOD UV |
| Nicotinamide (%) | >=31.0 TEST METHOD UV |
| WATER (%) | =< 1.5 TEST METHOD Karl Fisher |
| Heavy metals(Pb) (%) | =<0.002 |
1, What kinds of certificates can you offer?
Chems is an ISO2008 9001 certified company, as for Vitamin K
3, we can offer HAPPC, KOSHER, HALAL Certificates, ect.
2, Is Chems a manufacturer or just a trading company?
Chems is both manufacturer and trading company, we are Vitamin K3 (Niacinamide) distributor, at the same time, we are manufacturer of other products.
3, What is the Min Order Quantity of Vitamin K3 ?
Different products have different MOQ, for Vitamin K
3, the MOQ is 500kg.
4, What is the price of Vitamin K3 ?
Chems is a famous supplier and manufacturer of Vitamin K3 in China, and has been corporate with many Vitamin K3 suppliers for several years, we can provide you with cost-effective Vitamin K3.
5, How long shall we wait for your reply?
We can guarantee to reply your inquiries of Vitamin K3 in less than 24 hours in working days.
6, What kinds of transportation types can you provide?
Our main transportation methods include air transportation, land transportation and water transportation.
7, What kinds of payment terms can you accept?
The most commonly used payment terms are T/T, L/C, D/P, D/A, etc.
8, How long will I receive my good?
Chems has its own EDC warehouse in Shanghai, when your purchase order has been confirmed, inventory products will deliver within 1 week, other products delivery in 2 weeks.