Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 34552-83-5, Whether you call it Loperamide Hydrochloride or 4-(4-p-Chlorophenyl-4-hydroxypiperidino)-N -N-dimethyl-2 -2-diphenylbutyramide Hydrochloride you can be assured the products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.