C07C309/45 - CPC Classification

Sulfonic acids; Halides, esters, or anhydrides thereof; Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton

• C07C309/46 » having the sulfo groups bound to carbon atoms of non-condensed six-membered aromatic rings 60
• C07C309/47 » having at least one of the sulfo groups bound to a carbon atom of a six-membered aromatic ring being part of a condensed ring system 17
• C07C309/48 » the carbon skeleton being further substituted by halogen atoms 3
• C07C309/49 » the carbon skeleton being further substituted by singly-bound oxygen atoms 14
• C07C309/51 » at least one of the nitrogen atoms being part of any of the groups , X being a hetero atom, Y being any atom 42
• C07C309/52 » the carbon skeleton being further substituted by doubly-bound oxygen atoms 9

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