Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 520-45-6, Whether you call it Dehydroacetic Acid, 3-Acetyl-4-hydroxy-6-methyl-2H-pyran-2-one or DHA you can be assured the Dehydroacetic Acid products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.