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  2. List of unsolved problems in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    This is a list of unsolved problems in chemistry. Problems in chemistry are considered unsolved when an expert in the field considers it unsolved or when several experts in the field disagree about a solution to a problem.

  3. Bromine test - Wikipedia

    en.wikipedia.org/wiki/Bromine_test

    In organic chemistry, the bromine test is a qualitative test for the presence of unsaturation (carbon-to-carbon double or triple bonds), phenols and anilines. An unknown sample is treated with a small amount of elemental bromine in an organic solvent, being as dichloromethane or carbon tetrachloride. Presence of unsaturation and/or phenol or ...

  4. Organic chemistry - Wikipedia

    en.wikipedia.org/wiki/Organic_chemistry

    Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, and reactions of organic compounds and organic materials, i.e., matter in its various forms that contain carbon atoms. [1]

  5. List of chemical databases - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_databases

    Organic Compounds National Institute of Advanced Industrial Science and Technology (AIST), Japan Organic compounds Spectra:IR Raman MASS ESR 1 H NMR 13 C NMR SDBS No curated "SDBS". 34,000 Serum Metabolome Database: The Metabolomics Innovation Centre: found in blood serum "Serum Metabolome DB". 4,651 Solvent Selection Tool ACS Green Chemistry ...

  6. Fragmentation (mass spectrometry) - Wikipedia

    en.wikipedia.org/wiki/Fragmentation_(mass...

    These reactions are well documented over the decades and fragmentation patterns are useful to determine the molar weight and structural information of unknown molecules. [ 1 ] [ 2 ] Fragmentation that occurs in tandem mass spectrometry experiments has been a recent focus of research, because this data helps facilitate the identification of ...

  7. IUPAC nomenclature of organic chemistry - Wikipedia

    en.wikipedia.org/wiki/IUPAC_nomenclature_of...

    Identification of the ring or chain with the maximum number of senior groups. Identification of the ring or chain with the most senior elements (In order: N, P, Si, B, O, S, C). Identification of the parent compound. Rings are senior to chains if composed of the same elements. For cyclic systems: Identification of the parent cyclic ring.

  8. Structural formula - Wikipedia

    en.wikipedia.org/wiki/Structural_formula

    Skeletal structural formula of Vitamin B 12.Many organic molecules are too complicated to be specified by a molecular formula.. The structural formula of a chemical compound is a graphic representation of the molecular structure (determined by structural chemistry methods), showing how the atoms are connected to one another. [1]

  9. List of organic reactions - Wikipedia

    en.wikipedia.org/wiki/List_of_organic_reactions

    Download as PDF; Printable version; ... Well-known reactions and reagents in organic chemistry include ... List of organic compounds;