Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 24280-93-1, Whether you call it Mycophenolic Acid or 6-(4-Hydroxy-6-methoxy-7-methyl-3-oxo-5-phthalanyl)-4-methyl-4-hexa-3-noic Acid you can be assured the products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.