Ormetoprim

Ormetoprim
Clinical data
Other names	Ormethoprim
Identifiers
	IUPAC name 5-[(4,5-Dimethoxy-2-methylphenyl)methyl]pyrimidine-2,4-diamine;
CAS Number	6981-18-6;
PubChem CID	23418;
ChemSpider	21899;
UNII	M3EFS94984;
KEGG	D05273;
ChEBI	CHEBI:94553;
ChEMBL	ChEMBL494760;
CompTox Dashboard (EPA)	DTXSID1046689 ;
ECHA InfoCard	100.027.497
Chemical and physical data
Formula	C14H18N4O2
Molar mass	274.324 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES CC1=CC(=C(C=C1CC2=CN=C(N=C2N)N)OC)OC;
	InChI InChI=1S/C14H18N4O2/c1-8-4-11(19-2)12(20-3)6-9(8)5-10-7-17-14(16)18-13(10)15/h4,6-7H,5H2,1-3H3,(H4,15,16,17,18); Key:KEEYRKYKLYARHO-UHFFFAOYSA-N;

Ormetoprim is an antibiotic used in veterinary medicine. Typically it is used in combination with sulfadimethoxine, and it is used in the poultry and aquaculture industries.

Ormetoprim, like other diaminopyrimidines such as trimethoprim, inhibits the reduction of dihydrofolic acid to tetrahydrofolic acid by bacterial cells.