Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 3147-14-6, Whether you call it Calmagite or 3-Hydroxy-4-((2-hydroxy-5-methylphenyl)azo)-1-naphthalenesulfonic Acid you can be assured the products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.