4-Aminophenyl-1-Phenethylpiperidine (4-ANPP) Fentanyl Opioids Pharmaceutical Intermediates Supplier CAS 21409-26-7
Also Known As:4-ANPP, 4-Anilino-N-phenethylpiperidine, Despropionyl fentanyl
Other Chemical Name: N-PHENYL-1-(2-PHENYLETHYL) PIPERIDIN-4-AMINE;(1-PHENETHYL-PIPERIDIN-4-
Chemical Properties: Pale Yellow Powder.
Melting point : 94-96°C
Use: Pharmaceutical Intermediates, Fentanyl related substance E, Fentanyl Impurity I. 4-ANPP is
an analytical reference material that is structurally categorized as a piperidinamine. It is an
intermediate in the synthesis of fentanyl from N-phenethyl-4-piperidone (NPP). As such, 4-ANPP
may be used as a precursor for the manufacture of fentanyl and related opioids. 4-ANPP is also
an impurity found in fentanyl preparations. The physiological and toxicological properties of
this compound are not known. This product is intended for research and forensic applications.