Flunitrazepam
Also called Rohypnol.
A potent benzodiazepine sold as Rohypnol, notorious for its use in drug-facilitated assault. It is not marketed in the United States.
Sources and notes
- The introductionfrom sourceMoleculeFinder curated
- Other namesfrom sourceWikidataIts English label and aliases on Wikidata.
- Formula and weightcomputedPubChem
- 2D drawingcomputedPubChem structure, drawn by RDKit
- 3D modelfrom sourcePubChem 3D conformerLoaded after the page has painted, and on a phone only when you ask for it; the 2D drawing shows until it arrives.
Where you encounter it
Dispensed on prescription, not sold on a shelf.
Sources and notes
- The line abovefrom sourceMoleculeFinder curatedFrom the group the molecule belongs to.
Explore its structure
Choose a part to light it up.
A C=O bonded to a nitrogen, the same link that joins amino acids in a protein. It is sturdy, and its nitrogen is not a base the way an amine's is.
From: standard chemistry.
Fluorine, chlorine, bromine or iodine bonded to carbon. Each pulls electrons toward itself, and each is larger than the hydrogen the carbon would otherwise carry.
From: standard chemistry.
Six carbons in a flat hexagon, sharing their electrons evenly around the ring. It is stable, flat and oily, and it stacks readily against other flat rings.
From: standard chemistry.
Sources and notes
- The drawingcomputedPubChem structure, drawn by RDKitThe page's one shipped drawing, with the chosen part lit in amber under it.
- The partscomputedFound by ruleEach part is found by a chemical pattern, never picked by hand atom by atom; its words say where they come from.
Properties and sources
Calculated by PubChem
- Molecular formula
- C16H12FN3O3
- Molecular weight
- 313.28 g/mol
- XLogP3octanol/water, log units
- 2.1
- Polar surface areatopological
- 78.5 Ų
- H-bond donors
- 0
- H-bond acceptors
- 5
- Rotatable bonds
- 1
- Complexity
- 519
Measured LD50, HSDB via PubChem
415 mg/kg pure flunitrazepam, rat, oral
An LD50 is an animal study measurement, not a dose for a person.
Reported Hazard label (GHS), ECHA via PubChem
Warning Irritant pictogram (GHS07) and Health hazard pictogram (GHS08); hazard statements H302, H319, H373
Groups it belongs to
- Category
- Prescription medicine
- Family
- Benzodiazepines
- Chemical groups
- Aromatics, Amides, Halogenated
- Hazard classes
- Irritant, Health hazard, GHS Warning
CN1C(=O)CN=C(C2=C1C=CC(=C2)[N+](=O)[O-])C3=CC=CC=C3FPubChem CID 3380 · Wikidata Q62947 · InChIKey PPTYJKAXVCCBDU-UHFFFAOYSA-N · Data refreshed
Questions
- What is Flunitrazepam?
- A potent benzodiazepine sold as Rohypnol, notorious for its use in drug-facilitated assault. It is not marketed in the United States.
- How toxic is Flunitrazepam?
- The reported LD50 of Flunitrazepam is 415 mg/kg (rat, oral). An LD50 is an animal study measurement, not a dose for a person. Its GHS hazard label carries the signal word Warning and the hazard pictograms Irritant and Health hazard. from sourcefrom source
- What kind of molecule is Flunitrazepam?
- Flunitrazepam has the formula C16H12FN3O3 and a molecular weight of 313.28 g/mol. MoleculeFinder files it under benzodiazepines, in the prescription medicine group. from sourcefrom sourcefrom sourcefrom source
- What else is Flunitrazepam called?
- Flunitrazepam is also called Rohypnol. from source
- Who licenses Flunitrazepam as a medicine?
- The Italian Medicines Agency (AIFA) licenses Flunitrazepam for human use (AIC 023328, authorized December 11, 2000), as Roipnol. from source
Sources and notes
- Calculated valuescomputedPubChemComputed from the structure, so no laboratory conditions apply; complexity is PubChem's own structural score.
- LD50from sourceHSDB via PubChemOther values the sources report: mouse, oral, 1,200 mg/kg; mouse, another route, 1,050 mg/kg; rat, another route, 1,060 mg/kg. The page shows the one LD50 the site uses everywhere.
- Hazard labelfrom sourceECHA via PubChemThe label combines these classifications.
- ECHAfrom sourceAttributionSource: European Chemicals Agency, echa.europa.eu.
- Data refreshedfrom sourceMoleculeFinder2026-11-09
Keep exploring
Sources and notes
- The same kind of moleculefrom sourceMoleculeFinder curated groupsA structural neighbour in the same family or type group; the line names the group in its own words.
- The drawingscomputedPubChem structures, drawn by RDKit