CAS: 4156-16-5 Molecular Formula: C11H11NO4S Molecular Weight (g/mol): 253.272 MDL Number: MFCD00012128 InChI Key: MWOOKDULMBMMPN-UHFFFAOYSA-N Synonym: woodward's reagent k,n-ethyl-5-phenylisoxazolium-3'-sulfonate,2-ethyl-5-phenylisoxazolium-3'-sulfonate,nepis,unii-3bn309r76h,2-ethyl-5-3-sulfonatophenyl-1,2-oxazol-2-ium,woodward's reagent potassium,2-ethyl-5-phenylisoxazolium-3'-sulphonate,n-ethyl-5-phenylisoxazolium-3/'-sulfonate PubChem CID: 77804 IUPAC Name: 3-(2-ethyl-1,2-oxazol-2-ium-5-yl)benzenesulfonate SMILES: CC[N+]1=CC=C(O1)C2=CC(=CC=C2)S(=O)(=O)[O-]