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Fentanyl

Fentanyl Impurities & Reference Standards

Fentanyl is recognized as an active pharmaceutical ingredient (API) that supports formulation development, process validation, and quality assurance in drug manufacturing. Fentanyl is registered under CAS Number 437-38-7. With molecular formula C22H28N2O and molecular weight 336.5 g/mol, its physicochemical identity is well characterized. Related substances and impurities of Fentanyl are routinely used as reference materials for stability-indicating method development, impurity profiling, and compliance with ICH, USP, BP, and EP monographs. Our Fentanyl reference standards are provided with full documentation — Certificate of Analysis (CoA), HPLC chromatographic data, and spectral characterization — to support pharmaceutical R&D and GMP manufacturing.

Associated Impurities

Fentanyl Impurity – A

  • CAS No:
  • Mol. F.:

Fentanyl Impurity – B

  • CAS No: 1609-66-1
  • Mol. F.: C14H20N2O

Fentanyl Impurity – C

  • CAS No: 3258-84-2
  • Mol. F.: C21H26N2O

Fentanyl Impurity – D

  • CAS No: 21409-26-7
  • Mol. F.: C19H24N2

Fentanyl Impurity – E

  • CAS No: 100-52-7
  • Mol. F.: C7H6O

Fentanyl Impurity – F

  • CAS No: 62-53-3
  • Mol. F.: C6H7N

Fentanyl Impurity – G

  • CAS No: 620-71-3
  • Mol. F.: C9H11NO

Fentanyl Impurity – H

  • CAS No:
  • Mol. F.: C22H27ClN2O

Fentanyl Impurity – I

  • CAS No: 23056-29-3
  • Mol. F.: C11H16N2

Fentanyl Impurity – J

  • CAS No: 1155-56-2
  • Mol. F.: C18H22N2

Fentanyl Impurity – K

  • CAS No: 1474-02-8
  • Mol. F.: C21H26N2O

Fentanyl Impurity – L

  • CAS No: 103-63-9
  • Mol. F.: C8H9Br
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