Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 65277-42-1, Whether you call it Ketoconazole or (+/-)-cis-1-Acetyl-4-{4-[2-(2 -4-dichlorophenyl)-2-imidazol-1-ylmethyl-1 -3-dioxolan-4-ylmethoxy]phenyl}piperazine you can be assured the products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.