Sulfadimidine

Sulfamethazine
Clinical data
AHFS/Drugs.com	International Drug Names
ATC code	J01EB03 (WHO) QJ01EQ03 (WHO) QP51AG01 (WHO) QP51AG51 (WHO);
Identifiers
	IUPAC name 4-amino-N-(4,6-dimethylpyrimidin-2-yl); benzene-1-sulfonamide;
CAS Number	57-68-1 ;
PubChem CID	5327;
DrugBank	DB01582 ;
ChemSpider	5136 ;
UNII	48U51W007F;
KEGG	D02436 ;
ChEBI	CHEBI:102265 ;
ChEMBL	ChEMBL446 ;
NIAID ChemDB	027749;
CompTox Dashboard (EPA)	DTXSID6021290 ;
ECHA InfoCard	100.000.315
Chemical and physical data
Formula	C12H14N4O2S
Molar mass	278.33 g·mol−1
3D model (JSmol)	Interactive image;
Melting point	176 °C (349 °F)
	SMILES O=S(=O)(Nc1nc(cc(n1)C)C)c2ccc(N)cc2;
	InChI InChI=1S/C12H14N4O2S/c1-8-7-9(2)15-12(14-8)16-19(17,18)11-5-3-10(13)4-6-11/h3-7H,13H2,1-2H3,(H,14,15,16) ; Key:ASWVTGNCAZCNNR-UHFFFAOYSA-N ;
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Sulfadimidine or sulfamethazine is a sulfonamide antibacterial.

There are non-standardized^a abbreviations for it as "sulfadimidine" (abbreviated SDI and more commonly but less reliably^b SDD) and as "sulfamethazine" (abbreviated SMT and more commonly but less reliably^c SMZ). Other names include sulfadimerazine, sulfadimezine, and sulphadimethylpyrimidine.