C14H20N2O
232.32 g/mol
APIWarning
Norfentanyl
CAS1609-66-1EC216-543-3
Category
API
Compound Class
Amide
Primary Use
Pharmaceutical Raw Material
Norfentanyl is a monocarboxylic acid amide formed by the condensation of 4-(N'-phenyl)piperidin-4-amine with propanoic acid. It is a major metabolite of the opioid analgesic fentanyl and serves as a drug metabolite.
Pharmaceutical raw material for researchReference standard in analytical testing
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Controlled substances
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CAS 1609-66-1
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Referencesame scaffold
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Referencesame scaffold
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Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for Norfentanyl (CAS 1609-66-1) is 2933.39.
HS code (international, 6-digit)
2933.39
EU CN code (8-digit)
2933 39 99
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
N-phenyl-N-piperidin-4-ylpropanamide
InChIKey
PMCBDBWCQQBSRJ-UHFFFAOYSA-N
SMILES
CCC(=O)N(C1CCNCC1)C2=CC=CC=C2
Synonyms (21)
- Fentanyl Imp. B (EP); N-Phenyl-N-(piperidin-4-yl)propanamide; Norfentanyl; Fentanyl Citrate Impurity B; Fentanyl Impurity B; Fentanyl Impurity B
- DEA NO. 8366
- FENTANYL CITRATE IMPURITY B
- FENTANYL IMPURITY B
- Fentanyl-M nor
- Norfentanyl