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C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
C07C309/01—Sulfonic acids
C07C309/28—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
C07C309/41—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing singly-bound oxygen atoms bound to the carbon skeleton
C07C309/42—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing singly-bound oxygen atoms bound to the carbon skeleton having the sulfo groups bound to carbon atoms of non-condensed six-membered aromatic rings
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CH304969D1950-04-291950-04-29Verfahren zur Herstellung eines Kondensationsproduktes.
CH304969A
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Baugruppe bestehend aus einem kleinen tragbaren objekt und einem betätigungswerkzeug eines korrektors, der zur ausstattung des genannten kleinen tragbaren objekts wie einer uhr gehört