4-Aminophenyl-1-Phenethylpiperidine (4-ANPP) CAS 21409-26-7 Fentanyl Opioids Intermediate Supplier 4-AMINOPHENYL-1-PHENETHYLPIPERIDINE (4-ANPP) 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-YL)-PHENYL-AMINE;N-Phenyl-1-(2-phenethyl)piperidin-4-amine;N-(1-PHENETHYL-PIPERIDIN-4-YL)-ANILINE;N-[1-(2-Phenylethyl)-4-piperidinyl]benzenamine;N-Phenyl-1-(2-phenylethyl)-4-piperidinamine;4-Piperidinamine, N-phenyl-1-(2-phenylethyl)-;N-Phenyl-N’-[1-(2-phenylethyl)]- 4-piperidine. CAS:    21409-26-7 MF:    C19H24N2 MW:    280.40726 Chemical Properties: Pale Yellow Powder. Melting point : 94-96°C Purity: 99.46% Use: Pharmaceutical Intermediates, Fentanyl related substance E, Fentanyl Impurity I. 4-ANPP is an analytical reference material that is structurally categorized …