Baclofen
Also called Kemstro and Lioresal.
A muscle relaxant for the spasticity of multiple sclerosis and spinal injury. It is chemically GABA with a chlorophenyl group attached.
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. Baclofen 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.
A carbon carrying both a C=O and an O-H, written COOH. In water it gives up that hydrogen, which is what makes the molecule an acid.
From: standard chemistry.
A nitrogen carrying one or two hydrogens. Its spare pair of electrons can pick up a hydrogen ion, so an amine is a base.
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.
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
- C10H12ClNO2
- Molecular weight
- 213.66 g/mol
- XLogP3octanol/water, log units
- −1
- Polar surface areatopological
- 63.3 Ų
- H-bond donors
- 2
- H-bond acceptors
- 3
- Rotatable bonds
- 4
- Complexity
- 191
Reported Hazard label (GHS), ECHA via PubChem
Danger Toxic pictogram (GHS06), Irritant pictogram (GHS07) and Health hazard pictogram (GHS08); hazard statements H301, H315, H317, H319, H334, H335, H336, H360, H361
Reported Licence
The US Food and Drug Administration licenses Baclofen for human use (NDA 020075, authorized June 17, 1992), as Lioresal. Drugs@FDA
Groups it belongs to
- Category
- Prescription medicine
- Family
- Muscle relaxants
- Chemical groups
- Carboxylic Acids, Amines, Aromatics, Halogenated
- Hazard classes
- Acutely toxic, Irritant, Health hazard, GHS Danger
C1=CC(=CC=C1C(CC(=O)O)CN)ClPubChem CID 2284 · Wikidata Q413717 · InChIKey KPYSYYIEGFHWSV-UHFFFAOYSA-N · Data refreshed
Questions
- What is Baclofen?
- A muscle relaxant for the spasticity of multiple sclerosis and spinal injury. It is chemically GABA with a chlorophenyl group attached.
- How toxic is Baclofen?
- Its GHS hazard label carries the signal word Danger and the hazard pictograms Toxic, Irritant and Health hazard. from source
- What kind of molecule is Baclofen?
- Baclofen has the formula C10H12ClNO2 and a molecular weight of 213.66 g/mol. MoleculeFinder files it under muscle relaxants, in the prescription medicine group. from sourcefrom sourcefrom sourcefrom source
- Who licenses Baclofen as a medicine?
- The US Food and Drug Administration licenses Baclofen for human use (NDA 020075, authorized June 17, 1992), as Lioresal. 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 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
Sources and notes
- Similar in shapecomputedRDKit Morgan/TanimotoNeighbours by structural fingerprint; the sentence names the chemical groups the two share.
- The drawingscomputedPubChem structures, drawn by RDKit