3,4-Dihydro-4-methyl-1,4-benzoxazine-7-sulfonylchloride; 3,4-Dihydro-4-methyl-2H-1,4-benzoxazine-7-sulfonyl chloride;4-Methyl-3,4-dihydro-2H-1,4-benzoxazine-7-sulfonyl chloride
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