Background:

W-18-d₄(CRM) is a certified reference material intended for use as an internal standard for the quantification of W-18 by GC- or LC-MS. W-18 is categorized as an analgesic.¹This product is intended for research and forensic applications.

1.Knaus, E.E., Warren, B.K., and Ondrus, T.A.Analgesic substituted piperidylidene-2-sulfon(cyan)amide derivatives399,994(1984)