The invention discloses a preparation technology of 6-hydroxy-3-isopropyl-1H-benzo[c][1,2,6]thiadiazine-4(3H)-keto-2,2-dioxide. The preparation technology includes subjecting 5-chloro-2-nitrobenzoic acid serving as a raw material to hydrolysis reaction an
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(2017/08/28)
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