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CAS 139756-22-2 4-Ethoxy-3- (1-methyl-7-oxo-3-propyl-6, 7-dihydro-1H-pyrazolo[4, 3-d]pyrimidin-5-yl) Benzene-1-Sulfonyl Chloride |
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What is 4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzene-1-sulfonyl chloride ?
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