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Class Information
Number: 568/706
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Oxygen containing (e.g., perchlorylbenzene, etc.) > Hydroxy containing (h of -oh may be replaced by a group ia or iia light metal) > Nitrogen containing > Benzene ring containing > Phenols (h of -oh may be replaced by a group ia or iia light metal)
Description: Compounds wherein the benzene ring has an -OH or an -OM group bonded directly to the ring.










Sub-classes under this class:

Class Number Class Name Patents
568/709 Halogen containing 57
568/707 Plural rings containing 47
568/710 Polynitro 19
568/708 Purification or recovery 18


Patents under this class:
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Patent Number Title Of Patent Date Issued
8546607 Cross-coupling of phenolic derivatives Oct. 1, 2013
8378044 Living radical polymerization method using alcohol as catalyst Feb. 19, 2013
8080689 Nitrogen and hindered phenol containing dual functional macromolecular antioxidants: synthesis, performances and applications Dec. 20, 2011
7799948 Nitrogen and hindered phenol containing dual functional macromolecular antioxidants: synthesis, performances and applications Sep. 21, 2010
7799949 Tetraphenylmethane skeleton-containing compound Sep. 21, 2010
7737308 Methods for nitrating compounds Jun. 15, 2010
7256310 Levalbuterol salt Aug. 14, 2007
7005553 Method for the nitration of phenolic compounds Feb. 28, 2006
6727393 Process for the preparation of organic solutions Apr. 27, 2004
6242657 Method for producing aromatic nitro compounds Jun. 5, 2001
5874654 Purification of mixtures of nitroaromatic compounds by removing nitrocresols therefrom Feb. 23, 1999
5872289 Hydrolysis of carboxylic acid alkyl esters in the liquid phase Feb. 16, 1999
5847231 Selective nitration of phenol derivatives Dec. 8, 1998
5798443 Reaction and dissolving medium for peptides and synthesis method using this medium Aug. 25, 1998
5659065 Alpha-aminoalkanoic acids and reduction products Aug. 19, 1997
5414148 Preparation of p-nitrophenolic compounds May. 9, 1995
5393776 Tocotrienol analogs in the treatment of hypercholesterolemia and hyperlipidemia Feb. 28, 1995
5283352 Pharmacologically active compounds, methods for the preparation thereof and compositions containing the same Feb. 1, 1994
5104414 2-alkyl-4-methoxy-5-aminophenol or salt thereof, or 2-alkyl-4-methoxy-5-substituted aminophenol or salt thereof, and dyeing composition for keratin fibers comprising the same Apr. 14, 1992
5030769 Continuous direct preparation of nitrophenols Jul. 9, 1991
5021580 Polybenzoxazoles having pendant methyl groups Jun. 4, 1991
5019659 Method of separating 2-nitrosophenol isomer from admixture with 4-nitrosophenol isomer May. 28, 1991
5015260 2-alkyl-4-methoxy-5-aminophenol or salt thereof, or 2-alkyl-4-methoxy-5-substituted aminophenol or salt thereof, and dyeing composition for keratin fibers comprising the same May. 14, 1991
4982001 Process for the preparation of amino-1,3-benzenediol Jan. 1, 1991
4978808 Method of producing 2,2-bis(3-nitro-4-hydroxyphenyl)hexafluoropropane Dec. 18, 1990
4975093 Hair dyeing compositions containing 2,6-dinitro-phenol-derivatives Dec. 4, 1990
4962198 Process for the hydroxylation of electrophilic aromatic compounds Oct. 9, 1990
4960955 Process for making 4-chloro-2-methyl-5-nitro-phenol Oct. 2, 1990
4954653 Catalyst on the basis of silicon and titanium having high mechanical strength and a process for its preparation Sep. 4, 1990
4912246 1,3-bis(alkylcarbonato)-nitrobenzenes Mar. 27, 1990
RE33168 Nitration processes Feb. 20, 1990
4835324 Tetrahydrophthalimides, and their production and use May. 30, 1989
4827047 Chlorination of nitrophenols May. 2, 1989
4814518 Process for extracting nitrohydroxyaromatics from aqueous solutions Mar. 21, 1989
4788346 Process for the preparation of para-nitrophenol Nov. 29, 1988
4594460 Process for selective C-alkylation of phenols Jun. 10, 1986
4594459 Preparation of p-isopropenyl phenol and related compounds Jun. 10, 1986
4593129 Polyphosphazene process Jun. 3, 1986
4558040 Miticidal (2-alkyl-3,4-dihydro-2H-1-benzopyran-8-yl)-diazenecarboxylic acid esters Dec. 10, 1985
4473713 Hydrolysis of aryl-aliphatic ethers Sep. 25, 1984
4447654 Process for separating nitrated phenolic compounds from other phenolic compounds May. 8, 1984
4435601 Preparation of polyphenols by oxidation of hydroxybenzaldehydes Mar. 6, 1984
4396783 Hydroxylating aromatic hydrocarbons Aug. 2, 1983
4374293 Indene production from aromatic olefins Feb. 15, 1983
4347148 Full and lubricant compositions containing nitro phenols Aug. 31, 1982
4290961 Process for catalytically reducing carbonyl compounds Sep. 22, 1981
4284823 Process for preparing 3-(3,5-di-tert.alkyl-4-hydroxy-phenyl)-2,2-di-substituted propionaldehydes Aug. 18, 1981
4283565 Process for preparing benzylalcohols Aug. 11, 1981
4282160 Novel triarylmethane compounds Aug. 4, 1981
4278816 Process for preparing phenols and thiophenols Jul. 14, 1981

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