Alprazolam
Also called Alplax, Alpronax, Niravam and Nu-Alpraz.
The benzodiazepine sold as Xanax, used for anxiety and panic disorder. It is short-acting, which is part of why it is so often misused.
Sources and notes
- The introductionfrom sourceMoleculeFinder curated
- Other namesfrom sourcePubChem / 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. Alprazolam on the product labels we hold.
Medicines
Every product and list we hold
Sources and notes
- The product labels and their strengthsfrom sourceDailyMed (FDA label)Each label lists the molecule as an ingredient, and an active ingredient at the strength shown.
- How it gets therefrom sourceMoleculeFinder curatedEach mark is set by hand on our lists, never inferred; a label's ingredient is added by the maker. A row with no mark data says Not marked.
- The line abovefrom sourceMoleculeFinder curatedFrom the group the molecule belongs to.
Explore its structure
Choose a part to light it up.
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.
Rings joined where they share atoms, or a single ring standing alone. Atoms in a ring are held in place, so this part keeps its shape while chains around it can bend.
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.
Compare a related molecule
Alprazolam
Diazepam
Alprazolam acts fast and clears fast, while diazepam persists far longer through active metabolites that can stretch its effect over days.
Alprazolam vs Diazepam, side by sideAlso compared
Sources and notes
- The sentencefrom sourceMoleculeFinder comparison notesThe pair's answer line.
- The two drawingscomputedPubChem structures, drawn by RDKitThe two drawings side by side.
Properties and sources
Calculated by PubChem
- Molecular formula
- C17H13ClN4
- Molecular weight
- 308.8 g/mol
- XLogP3octanol/water, log units
- 2.1
- Polar surface areatopological
- 43.1 Ų
- H-bond donors
- 0
- H-bond acceptors
- 3
- Rotatable bonds
- 1
- Complexity
- 434
Measured LD50, HSDB via PubChem
1,220 mg/kg pure alprazolam, rat, oral
An LD50 is an animal study measurement, not a dose for a person.
Reported Hazard label (GHS), ECHA, HSDB via PubChem
Warning Irritant pictogram (GHS07); hazard statements H302
Reported Licence
The US Food and Drug Administration licenses Alprazolam for human use (NDA 018276, authorized October 16, 1981), as Xanax. Drugs@FDA
Groups it belongs to
- Category
- Prescription medicine
- Family
- Benzodiazepines
- Chemical groups
- Aromatics, Halogenated
- Hazard classes
- Irritant, GHS Warning
CC1=NN=C2N1C3=C(C=C(C=C3)Cl)C(=NC2)C4=CC=CC=C4PubChem CID 2118 · Wikidata Q319877 · InChIKey VREFGVBLTWBCJP-UHFFFAOYSA-N · Data refreshed
Questions
- What is Alprazolam?
- The benzodiazepine sold as Xanax, used for anxiety and panic disorder. It is short-acting, which is part of why it is so often misused.
- How toxic is Alprazolam?
- The reported LD50 of Alprazolam is 1,220 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 pictogram Irritant. from sourcefrom source
- What kind of molecule is Alprazolam?
- Alprazolam has the formula C17H13ClN4 and a molecular weight of 308.8 g/mol. MoleculeFinder files it under benzodiazepines, in the prescription medicine group. from sourcefrom sourcefrom sourcefrom source
- Who licenses Alprazolam as a medicine?
- The US Food and Drug Administration licenses Alprazolam for human use (NDA 018276, authorized October 16, 1981), as Xanax. 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, 812 mg/kg; rat, another route, 355 mg/kg; mouse, another route, 380 mg/kg. The page shows the one LD50 the site uses everywhere.
- Hazard labelfrom sourceECHA, HSDB via PubChemThe label combines these classifications.
- ECHAfrom sourceAttributionSource: European Chemicals Agency, echa.europa.eu.
- Licencefrom sourceDrugs@FDARead 2026-10-21.
- Data refreshedfrom sourceMoleculeFinder2026-11-09
Keep exploring
More related molecules
- Temazepam Also a benzodiazepine
Sources and notes
- Compared side by sidefrom sourceMoleculeFinder comparison notesA molecule we compare it with on its own page.
- 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