Methyl-1,4-naphthoquinone(Vitamin K3) Product Name: Menadione;Methyl-1,4-naphthoquinone;Vitamin K3 CAS Number:58-27-5 Technical conditions: Character:Light yellow crystalline powder Assay spec98.5% Min Melting Range105-107°C Use: Methyl-1,4-naphthoquinoneis an important,fine chemical material,which is used as an intermediate for vitamin K1,vitamin K2,vitamin K3 and dye. Packing:In 20kg/drum cardboard drum lined with Black Plastic Bag Inside