Organic compounds (class 532, subclass 1) > Acyclic carbon bonded directly to three benzene rings or to two benzene rings and a cyclohexadienyl ring, which acyclic carbon may not be bonded to a fourth carbon (e.g., triphenylmethane dyestuffs, etc.) > Carbon bonded directly to -s(=o)(=o)oh (wherein h may be replaced by a group ia or iia light metal, or by substituted or unsubstituted ammonium; i.e., sulfonic acids and salts thereof) > Patents

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Class Information
Number: 552/112
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Acyclic carbon bonded directly to three benzene rings or to two benzene rings and a cyclohexadienyl ring, which acyclic carbon may not be bonded to a fourth carbon (e.g., triphenylmethane dyestuffs, etc.) > Carbon bonded directly to -s(=o)(=o)oh (wherein h may be replaced by a group ia or iia light metal, or by substituted or unsubstituted ammonium; i.e., sulfonic acids and salts thereof)
Description: Compounds wherein-S(=O)(=O)OH, in which H may be replaced by a Group IA or IIA light metal or by substituted or unsubstituted ammonium, is bonded directly to carbon.

Patents under this class:

Patent Number	Title Of Patent	Date Issued
7097669	Colorant compositions	Aug. 29, 2006
6533826	Method for producing aqueous solutions of cationic diarylmethane colorants and triarylmethane colorants	Mar. 18, 2003
4613465	Triphenyl methane derivatives and method of quantitatively measuring an oxidative substance	Sep. 23, 1986
4566999	Process for the preparation of acid dyestuffs of low electrolyte content of the triphenylmethane series	Jan. 28, 1986
4321207	Process for preparing triarylmethane dyes	Mar. 23, 1982
4318859	Process for the preparation of basic dyestuffs	Mar. 9, 1982
4283538	Novel triarylmethane compounds	Aug. 11, 1981
4167510	Ester capped alkyleneoxy fugitive tints and method for producing same	Sep. 11, 1979