Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 32780-64-6, Whether you call it Labetalol Hydrochloride or 5-[1-Hydroxy-2-[(1-methyl-3-phenylpropyl)amino]ethyl]salicylamide Hydrochloride you can be assured the products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.