Ciprofloxacin
Also called Velmonit, Ciloxan and Ciprobay.
A fluoroquinolone antibiotic sold as Cipro, used for urinary, gut and some respiratory infections. Ciprofloxacin (C17H18FN3O3, 331 g/mol) is an antibiotic dispensed on prescription.
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. Ciprofloxacin 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
- C17H18FN3O3
- Molecular weight
- 331.34 g/mol
- XLogP3octanol/water, log units
- −1.1
- Polar surface areatopological
- 72.9 Ų
- H-bond donors
- 2
- H-bond acceptors
- 7
- Rotatable bonds
- 3
- Complexity
- 571
Reported Hazard label (GHS), ECHA via PubChem
hazard statements H412
Reported Licence
The US Food and Drug Administration licenses Ciprofloxacin for human use (NDA 019537, authorized October 22, 1987), as Cipro. Drugs@FDA
Groups it belongs to
- Category
- Prescription medicine
- Family
- Antibiotics
- Chemical groups
- Carboxylic Acids, Amines, Aromatics, Halogenated
C1CC1N2C=C(C(=O)C3=CC(=C(C=C32)N4CCNCC4)F)C(=O)OPubChem CID 2764 · Wikidata Q256602 · InChIKey MYSWGUAQZAJSOK-UHFFFAOYSA-N · Data refreshed
Questions
- What is Ciprofloxacin?
- A fluoroquinolone antibiotic sold as Cipro, used for urinary, gut and some respiratory infections. Ciprofloxacin (C17H18FN3O3, 331 g/mol) is an antibiotic dispensed on prescription.
- What kind of molecule is Ciprofloxacin?
- Ciprofloxacin has the formula C17H18FN3O3 and a molecular weight of 331.34 g/mol. MoleculeFinder files it under antibiotics, in the prescription medicine group. from sourcefrom sourcefrom sourcefrom source
- What else is Ciprofloxacin called?
- Ciprofloxacin is also called Velmonit, Ciloxan and Ciprobay. from source
- Who licenses Ciprofloxacin as a medicine?
- The US Food and Drug Administration licenses Ciprofloxacin for human use (NDA 019537, authorized October 22, 1987), as Cipro. 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
- 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