Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 50-13-5, Whether you call it Meperidine Hydrochloride, Pethidine Hydrochloride or Ethyl 1-Methyl-4-phenylpiperidine-4-carboxylate Hydrochloride you can be assured the Meperidine Hydrochloride products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.