Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 51-42-3, Whether you call it Epinephrine Bitartrate, Adrenaline Acid Tartrate , Epinephrine Hydrogen Tartrate or Adrenaline Bitartrate you can be assured the Epinephrine Bitartrate products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.