Background:

4-ANPP-¹³C₆(CRM) is a certified reference material intended for use as an internal standard for the quantification of 4-ANPP by GC- or LC-MS. 4-ANPP is categorized as a piperidinamine. It is an intermediate in the synthesis of fentanyl from N-phenethyl-4-piperidone .¹As such, 4-ANPP has been used as a precursor for the manufacture of fentanyl and related opioids. 4-ANPP is also an impurity found in fentanyl preparations. It is a known metabolite of acetyl fentanyl , butyryl fentanyl , furanyl fentanyl , acrylfentanyl , and fentanyl.^2,3,4,54-ANPP-¹³C₆is regulated as a Schedule II compound in the United States. This product is intended for research and forensic applications.

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