Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 4205-91-8, Whether you call it Clonidine Hydrochloride, 2-(2 -6-Dichloroanilino)-2-imidazoline Hydrochloride or Catapres you can be assured the Clonidine Hydrochloride products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.