Acetic anhydride Acetyl sulfisoxazole

Acetyl Sulfisoxazole. N-[(4-Amumphenyl)sulfon-y(7-N-(3,4-dimethyl-S-isoxazolyl)acctamlde W-acelyl-N1-(3,4-dimetkyl-5-isoxazolyl)sulfan ila mide IV -monoacetyl sulfisoxazole Gantrisin Acetyl. CjjH.jNjO.S mol wt 309.35. C 50.47%. H 4.89%. N 13.58%. O io.69%, S 10.37%. Prepd by the action of acetic anhydride on Sulfisoxazole sus -pended in acetone and pyridine Hoffer, U.S. pat. 2,721,200 (1955 to Hoffmann-La Roche). 

Acetic anhydride Acetaminophen Acetazolamide Acetrizoate sodium Acetyl cysteine Acetyl sulfisoxazole Afloqualone... 

It is prepared by first converting sulfisoxazole into its sodium salt by treatment with sodium hydroxide and then carrying out the selective acetylation at N with an equimolar quantity of either acetic anhydride or acetyl chloride. 

---