All Photos(1)



Fentanyl citrate salt

N-Phenyl-N-[1-(2-phenylethyl)-4-piperidinyl]propanamide citrate salt
Empirical Formula (Hill Notation):
C22H28N2O · C6H8O7
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level

drug control

USDEA Schedule II; Home Office Schedule 2; stupéfiant (France); kontrollierte Droge in Deutschland; regulated under CDSA - not available from Sigma-Aldrich Canada; estupefaciente (Spain); Decreto Lei 15/93: Tabela IA (Portugal)

SMILES string




InChI key


Gene Information

human ... OPRM1(4988)

Looking for similar products? Visit Product Comparison Guide

Biochem/physiol Actions

Phenylpiperidine analgesic that is 80 times more potent than morphine as an analgesic and 6000 times more potent than morphine as a μ opioid receptor agonist.


Skull and crossbones

Signal Word


Hazard Statements

Hazard Classifications

Acute Tox. 1 Dermal - Acute Tox. 1 Inhalation - Acute Tox. 2 Oral - STOT SE 3

Target Organs

Central nervous system

Storage Class Code

6.1A - Combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

Anouk Wezel et al.
Atherosclerosis, 241(2), 289-296 (2015-06-13)
Activated mast cells have been identified in the intima and perivascular tissue of human atherosclerotic plaques. As mast cells have been described to release a number of chemokines that mediate leukocyte fluxes, we propose that activated mast cells may play...
Sharon A Stevenson et al.
Scientific reports, 10(1), 11083-11083 (2020-07-08)
Many songbirds sing in non-reproductive contexts while in flocks. Singing in such gregarious contexts is critical for maintaining and learning songs; however, song is not directed towards other individuals and has no obvious, immediate social consequences. Studies using conditioned place...
Willem M Otte et al.
Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism, 35(8), 1358-1367 (2015-05-15)
Hemispherectomy is often followed by remarkable recovery of cognitive and motor functions. This reflects plastic capacities of the remaining hemisphere, involving large-scale structural and functional adaptations. Better understanding of these adaptations may (1) provide new insights in the neuronal configuration...
Houssam G Kotrach et al.
Journal of applied physiology (Bethesda, Md. : 1985), 118(11), 1406-1414 (2015-06-03)
Few therapies exist for the relief of dyspnea in restrictive lung disorders. Accumulating evidence suggests that nebulized opioids selective for the mu-receptor subtype may relieve dyspnea by modulating intrapulmonary opioid receptor activity. Our respective primary and secondary objectives were to...
Nicolas Massaly et al.
Pain, 161(12), 2798-2804 (2020-07-09)
Currently, opioids targeting mu-opioid receptors are the most potent drugs for acute and cancer pain. However, opioids produce adverse side effects such as constipation, respiratory depression, or addiction potential. We recently developed (±)-N-(3-fluoro-1-phenethylpiperidine-4-yl)-N-phenyl propionamide (NFEPP), a compound that does not...

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service