C19H24N2
280.4 g/mol
APIDanger
Despropionylfentanyl
CAS21409-26-7EC642-161-5
Category
API
Compound Class
Amine
Primary Use
Pharmaceutical Raw Material
Despropionylfentanyl, also known as 4-anilino-N-phenethylpiperidine, is a DEA Schedule II controlled substance with a high potential for abuse that may lead to severe psychological or physical dependence. It serves as both a metabolite and a precursor of the opioid fentanyl.
Pharmaceutical intermediate for the synthesis of fentanyl-related compoundsReference standard or metabolite in analytical and forensic research
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
Substances on this list are tightly controlled under chemical-weapons or precursor regulations. ChemAbout does not facilitate their procurement; this page is a compliance reference only.
CAS 21409-26-7
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Safety Reference
Danger
H300Fatal if swallowed
H310Fatal in contact with skin
H330Fatal if inhaled
H302Harmful if swallowed
H312Harmful in contact with skin
H332Harmful if inhaled
Customs Tariff Classification
The international HS code for Despropionylfentanyl (CAS 21409-26-7) is 2933.36.
HS code (international, 6-digit)
2933.36
EU CN code (8-digit)
2933 36 00
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-1-(2-phenylethyl)piperidin-4-amine
InChIKey
ZCMDXDQUYIWEKB-UHFFFAOYSA-N
SMILES
C1CN(CCC1NC2=CC=CC=C2)CCC3=CC=CC=C3
Synonyms (26)
- 4-ANPP
- ANPP
- 4-Aminophenyl-1-phene
- ANPP ( PRECURSOR TO FENTANYL)
- DEA No. 8333
- Depropionylfentanyl
- Despropionylfentanyl
- FENTANYL CITRATE IMPURITY D
- Fentanyl impurity D