Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 1149-16-2, Whether you call it Glyoxal-bis(2-hydroxyanil), GBHA or 2 -2'-(Ethanediylidenedinitrilo)diphenol you can be assured the Glyoxal-bis(2-hydroxyanil) products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.