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Home/Compounds/API/Alfentanil
C21H32N6O3
416.5 g/mol
API

Alfentanyl

CAS71195-58-9
Category
API
Compound Class
Heterocycle
Primary Use
Pharmaceutical Raw Material

Alfentanil is a potent, short-acting synthetic opioid analgesic active pharmaceutical ingredient used for anesthesia in surgery. It is an analogue of fentanyl with approximately one-fourth to one-tenth the potency, one-third the duration of action, and an onset of action four times faster, attributed to its pKa of about 6.

Anesthesia in surgeryRapid-onset opioid analgesia in surgical settings

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.

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Related Compounds

StrongSame Parent

Alfentanil hydrochloride

CAS69049-06-5

pharmaceutical raw material

StrongSame Parent

Alfentanil hydrochloride hydrate

CAS70879-28-6

pharmaceutical raw material

ApplicationSame Use

Nalbuphine hydrochloride

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pharmaceutical raw material

ApplicationSame Use

(S,S)-tramadol

CAS123134-25-8

pharmaceutical raw material

ApplicationSame Use

Propoxyphene hydrochloride

CAS1639-60-7

pharmaceutical raw material

ApplicationSame Use

Tramadol

CAS27203-92-5

pharmaceutical raw material

ReferenceSame Category

(+/-)-ambrisentan

CAS713516-99-5

pharmaceutical raw material

ReferenceSame Category

Gonadorelin diacetate

CAS71447-49-9

pharmaceutical raw material

Customs Tariff Classification

The international HS code for Alfentanyl (CAS 71195-58-9) is 2933.33.

HS code (international, 6-digit)

2933.33

EU CN code (8-digit)

2933 33 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-[1-[2-(4-ethyl-5-oxotetrazol-1-yl)ethyl]-4-(methoxymethyl)piperidin-4-yl]-N-phenylpropanamide

InChIKey

IDBPHNDTYPBSNI-UHFFFAOYSA-N

SMILES

CCC(=O)N(C1=CC=CC=C1)C2(CCN(CC2)CCN3C(=O)N(N=N3)CC)COC

Synonyms (27)
  • R-39209-
  • Alfentanil (INN)
  • Alfentanilum [INN-Latin]
  • Alfenta
  • Alfentanilo
  • Alfentanilum
  • Alfentanyl
  • DEA No. 9737
  • Limifen
  • Rapifen
  • Rapifen (TN)
  • afentanyl

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