Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 1229-55-6, Whether you call it Solvent Red 1, Sudan R , Pigment Purple , Brilliant Fast Scarlet R , Ceres Red G or 1-[(2-Methoxyphenyl)azo]-2-naphthol you can be assured the Solvent Red 1 products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.