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  2. 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 possibly arranged in the real three-dimensional space.

  3. Skeletal formula - Wikipedia

    en.wikipedia.org/wiki/Skeletal_formula

    The skeletal formula of the antidepressant drug escitalopram, featuring skeletal representations of heteroatoms, a triple bond, phenyl groups and stereochemistry. The skeletal formula, line-angle formula, bond-line formula or shorthand formula of an organic compound is a type of molecular structural formula that serves as a shorthand representation of a molecule's bonding and some details of ...

  4. Lewis structure - Wikipedia

    en.wikipedia.org/wiki/Lewis_structure

    Another shorthand structural diagram is the skeletal formula (also known as a bond-line formula or carbon skeleton diagram). In a skeletal formula, carbon atoms are not signified by the symbol C but by the vertices of the lines. Hydrogen atoms bonded to carbon are not shown—they can be inferred by counting the number of bonds to a particular ...

  5. IUPAC nomenclature of organic chemistry - Wikipedia

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

    For chains: Identification of the parent hydrocarbon chain. This chain must obey the following rules, in order of precedence: It should have the maximum length. It should have the maximum number of heteroatoms. It should have the maximum number of senior heteroatoms (in order: O, S, N, P, Si, B). For cyclic systems and chains after previous rules:

  6. List of carboxylic acids - Wikipedia

    en.wikipedia.org/wiki/List_of_carboxylic_acids

    IUPAC name: Common name: Structural formula Propionic acid: propanoic acid ethanecarboxylic acid CH 3 CH 2 CO 2 H : Acrylic acid: propenoic acid acroleic acid ethylenecarboxylic acid

  7. Chemical formula - Wikipedia

    en.wikipedia.org/wiki/Chemical_formula

    A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.

  8. Geneva Rules - Wikipedia

    en.wikipedia.org/wiki/Geneva_Rules

    The Geneva Rules are the rules established by the ... ""Just as the Structural Formula Does": Names, Diagrams, and the Structure of Organic Chemistry at the 1892 ...

  9. Structure - Wikipedia

    en.wikipedia.org/wiki/Structure

    The structure of a DNA molecule is essential to its function. A structure is an arrangement and organization of interrelated elements in a material object or system, or the object or system so organized. [1] Material structures include man-made objects such as buildings and machines and natural objects such as biological organisms, minerals and ...