Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 609-99-4, Whether you call it 3,5-Dinitrosalicylic Acid, 2-Hydroxy-3 -5-dinitrobenzoic Acid or 3 -5-Dinitro-2-hydroxybenzoic Acid you can be assured the 3,5-Dinitrosalicylic Acid products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.