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C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
C07C309/63—Esters of sulfonic acids
C07C309/72—Esters of sulfonic acids having sulfur atoms of esterified sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
C07C309/74—Esters of sulfonic acids having sulfur atoms of esterified sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton to carbon atoms of six-membered aromatic rings being part of condensed ring systems
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CH138489D1928-09-181928-09-18
Process for the production of a new condensation product.
CH138489A
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