Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 83-72-7, Whether you call it 2-Hydroxy-1,4-naphthoquinone, Lawsone or Natural Orange 6 you can be assured the 2-Hydroxy-1,4-naphthoquinone products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.