Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 501-30-4, Whether you call it Kojic Acid, 5-Hydroxy-2-(hydroxymethyl)-4H-pyran-4-one or 5-Hydroxy-2-hydroxymethyl-4-pyrone you can be assured the Kojic Acid products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.