Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 110-17-8, Whether you call it Fumaric Acid, 2-Butenedioic Acid , trans-1 -2-Ethylenedicarboxylic Acid , trans-Butenedioic Acid , Boletic Acid or Allomalenic Acid you can be assured the Fumaric Acid products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.