Chemistry is traditionally divided into organic and inorganic chemistry. Quality Control of 1,2-Benzisoxazole-3-acetic Acid, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent£¬Which mentioned a new discovery about 4865-84-3
1,2-BENZISOXAZOLE-3-METHANE-SULFONIC ACID AMMONIUM SALT
The present invention provides substantially isolated ammonium salt of 1,2- benzisoxazole-3-methane sulfonic acid (BOS-NH4), which can be crystalline. The present invention also provides substantially chemically pure BOS-NH4, which is non- hygroscopic or slightly hygroscopic. Another aspect of the present invention is directed to processes of preparing the BOS-NH4. The present invention also provides processes for preparing l,2-benzisoxazole-3-methane-sulfonyl chloride (BOS-Cl) using the BOS-NH4. The present invention also provides processes for preparing zonisamide using the BOS-NH4 or BOS-Cl.
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Reference£º
Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics