Ondansetron
Also called Zofran ODT, Zudan and Zuplenz.
An anti-nausea medicine sold as Zofran, used for the sickness caused by chemotherapy, radiation and surgery.
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.
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 with a carbon on each side. Its oxygen accepts hydrogen bonds but has no hydrogen to give, and it resists oxidation better than an aldehyde.
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.
Properties and sources
Calculated by PubChem
- Molecular formula
- C18H19N3O
- Molecular weight
- 293.4 g/mol
- XLogP3octanol/water, log units
- 2.3
- Polar surface areatopological
- 39.8 Ų
- H-bond donors
- 0
- H-bond acceptors
- 2
- Rotatable bonds
- 2
- Complexity
- 440
Reported Hazard label (GHS), ECHA, HSDB via PubChem
Danger Corrosive pictogram (GHS05), Toxic pictogram (GHS06), Irritant pictogram (GHS07) and Environmental pictogram (GHS09); hazard statements H301, H315, H318, H319, H335, H362, H400, H410, H411
Reported Licence
The US Food and Drug Administration licenses Ondansetron for human use (ANDA 076183, authorized December 26, 2006). Drugs@FDA
Groups it belongs to
- Category
- Prescription medicine
- Family
- Anti-nausea medicines
- Elements
- Nitrogen
- Hazard classes
- Corrosive, Acutely toxic, Irritant, Environmental hazard, GHS Danger
CC1=NC=CN1CC2CCC3=C(C2=O)C4=CC=CC=C4N3CPubChem CID 4595 · Wikidata Q410011 · InChIKey FELGMEQIXOGIFQ-UHFFFAOYSA-N · Data refreshed
Questions
- What is Ondansetron?
- An anti-nausea medicine sold as Zofran, used for the sickness caused by chemotherapy, radiation and surgery.
- How toxic is Ondansetron?
- Its GHS hazard label carries the signal word Danger and the hazard pictograms Corrosive, Toxic, Irritant and Environmental. from source
- What kind of molecule is Ondansetron?
- Ondansetron has the formula C18H19N3O and a molecular weight of 293.4 g/mol. MoleculeFinder files it under anti-nausea medicines, in the prescription medicine group. from sourcefrom sourcefrom sourcefrom source
- Who licenses Ondansetron as a medicine?
- The US Food and Drug Administration licenses Ondansetron for human use (ANDA 076183, authorized December 26, 2006). from source
Sources and notes
- Calculated valuescomputedPubChemComputed from the structure, so no laboratory conditions apply; complexity is PubChem's own structural score.
- 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