Cimicoxib

Names
Preferred IUPAC name 4-[4-Chloro-5-(3-fluoro-4-methoxyphenyl)-1H-imidazol-1-yl]benzene-1-sulfonamide
Identifiers
CAS Number	265114-23-6 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:76127
ChEMBL	ChEMBL435381
ChemSpider	184745
ECHA InfoCard	100.170.774
PubChem CID	213053
UNII	W7FHJ107MC Y
CompTox Dashboard (EPA)	DTXSID30181093
InChI InChI=1S/C16H13ClFN3O3S/c1-24-14-7-2-10(8-13(14)18)15-16(17)20-9-21(15)11-3-5-12(6-4-11)25(19,22)23/h2-9H,1H3,(H2,19,22,23) Key: KYXDNECMRLFQMZ-UHFFFAOYSA-N InChI=1/C16H13ClFN3O3S/c1-24-14-7-2-10(8-13(14)18)15-16(17)20-9-21(15)11-3-5-12(6-4-11)25(19,22)23/h2-9H,1H3,(H2,19,22,23) Key: KYXDNECMRLFQMZ-UHFFFAOYAQ
SMILES O=S(=O)(c3ccc(n1c(c(Cl)nc1)c2ccc(OC)c(F)c2)cc3)N
Properties
Chemical formula	C16H13ClFN3O3S
Molar mass	381.81 g·mol−1
Pharmacology
ATCvet code	QM01AH93 (WHO)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Cimicoxib (UR-8880 trade name Cimalgex) is a nonsteroidal anti-inflammatory drug (NSAID) used in veterinary medicine to treat dogs for pain and inflammation associated with osteoarthritis and for the management of pain and inflammation associated with surgery.^[1] It acts as a COX-2 inhibitor.

Synthesis

Reaction of the imine with TosMIC in the presence of potassium carbonate leads to what may be viewed as 2+3 cycloaddition of the nitrogen analogue of a ketene to form the imidazole ring.