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  2. Bromine test - Wikipedia

    en.wikipedia.org/wiki/Bromine_test

    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 ...

  3. Retrosynthetic analysis - Wikipedia

    en.wikipedia.org/wiki/Retrosynthetic_analysis

    Retrosynthetic analysis. Retrosynthetic analysis is a technique for solving problems in the planning of organic syntheses. This is achieved by transforming a target molecule into simpler precursor structures regardless of any potential reactivity/interaction with reagents. Each precursor material is examined using the same method.

  4. Gas chromatography–mass spectrometry - Wikipedia

    en.wikipedia.org/wiki/Gas_chromatography–mass...

    Gas chromatography–mass spectrometry (GC–MS) is an analytical method that combines the features of gas-chromatography and mass spectrometry to identify different substances within a test sample. [1] Applications of GC–MS include drug detection, fire investigation, environmental analysis, explosives investigation, food and flavor analysis ...

  5. Forensic chemistry - Wikipedia

    en.wikipedia.org/wiki/Forensic_chemistry

    e. Forensic chemistry is the application of chemistry and its subfield, forensic toxicology, in a legal setting. A forensic chemist can assist in the identification of unknown materials found at a crime scene. [1] Specialists in this field have a wide array of methods and instruments to help identify unknown substances.

  6. Electron ionization - Wikipedia

    en.wikipedia.org/wiki/Electron_ionization

    This technique is considered a hard (high fragmentation) ionization method, since it uses highly energetic electrons to produce ions. This leads to extensive fragmentation, which can be helpful for structure determination of unknown compounds. EI is the most useful for organic compounds which have a molecular weight below 600 amu.

  7. Organic chemistry - Wikipedia

    en.wikipedia.org/wiki/Organic_chemistry

    t. e. 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] Study of structure determines their structural formula.

  8. List of unsolved problems in chemistry - Wikipedia

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

    List of thermal conductivities. List of undecidable problems. List of unsolved deaths. List of unsolved problems in astronomy. List of unsolved problems in biology. List of unsolved problems in computer science. List of unsolved problems in economics. List of unsolved problems in fair division. List of unsolved problems in geoscience.

  9. Kovats retention index - Wikipedia

    en.wikipedia.org/wiki/Kovats_retention_index

    Isothermal Kovats retention index. The Kovats index applies to organic compounds. The method interpolates peaks between bracketing n -alkanes. The Kovats index of n-alkanes is 100 times their carbon number, e.g. the Kovats index of n - butane is 400. The Kovats index is dimensionless, unlike retention time or retention volume.