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  2. Butyl group - Wikipedia

    en.wikipedia.org/wiki/Butyl_group

    The prefixes sec (from "secondary") and tert (from "tertiary") refer to the number of additional side chains (or carbons) connected to the first butyl carbon. The prefix "iso" or "iso" means "isolated" while the prefix 'n-' stands for "normal". Butan-2-yl (sec-butyl) group is chiral. The carbon atom at position 2 is a stereocenter.

  3. Descriptor (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Descriptor_(Chemistry)

    n, iso and neo are no longer used in the systematic nomenclature, but still frequently in trivial names and in laboratory jargon. The prefix n describes a straight-chain carbon skeleton without branches, whereas iso describes a branched skeleton, without specifying any further details

  4. Arene substitution pattern - Wikipedia

    en.wikipedia.org/wiki/Arene_substitution_pattern

    Trimethylsilyl, tert-butyl, and isopropyl groups can form stable carbocations, hence are ipso directing groups. Meso-substitution refers to the substituents occupying a benzylic position. It is observed in compounds such as calixarenes and acridines. Peri-substitution occurs in naphthalenes for substituents at the 1 and 8 positions. [citation ...

  5. E–Z notation - Wikipedia

    en.wikipedia.org/wiki/E–Z_notation

    Alitretinoin. For organic molecules with multiple double bonds, it is sometimes necessary to indicate the alkene location for each E or Z symbol. For example, the chemical name of alitretinoin is (2E,4E,6Z,8E)-3,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexenyl)nona-2,4,6,8-tetraenoic acid, indicating that the alkenes starting at positions 2, 4, and 8 are E while the one starting at position 6 is Z.

  6. Wikipedia : Naming conventions (chemistry)

    en.wikipedia.org/wiki/Wikipedia:Naming...

    The number 1 can be omitted when there is only one isomeric state, e.g. tantalum-180m, 180m Ta. You may use a nuclide template. Corresponding letters also used in literature, these are not used in this wiki: m n p q . The hydrogen isotopes are exceptions where the common special names may be used: Protium (= hydrogen-1, 1 H).

  7. Tetramethyl acetyloctahydronaphthalenes - Wikipedia

    en.wikipedia.org/wiki/Tetramethyl_acetylocta...

    Tetramethyl acetyloctahydronaphthalenes (International Nomenclature for Cosmetic Ingredients name) (1-(1,2,3,4,5,6,7,8-ottaidro-2,3,8,8,-tetrametil-2-naftil)etan-1-one) is a synthetic ketone fragrance also known as OTNE (octahydrotetramethyl acetophenone) and by other commercial trade names such as: Iso E Super, Iso Gamma Super, Anthamber, Amber Fleur, Boisvelone, Iso Ambois, Amberlan, Iso ...

  8. sec-Butylamine - Wikipedia

    en.wikipedia.org/wiki/Sec-Butylamine

    sec-Butylamine is an organic chemical compound (specifically, an amine) with the formula CH 3 CH 2 CH(NH 2)CH 3. It is a colorless liquid. sec-Butylamine is one of the four isomeric amines of butane, the others being n-butylamine, tert-butylamine, and isobutylamine. sec-Butylamine is chiral and therefore can exist in either of two enantiomeric ...

  9. Tertiary carbon - Wikipedia

    en.wikipedia.org/wiki/Tertiary_carbon

    The R is the functional group attached to a tertiary carbon. If the functional group was an OH group, this compound would be commonly called tert-butanol or t-butanol. When a functional group is attached to a tertiary carbon, the prefix -tert (-t) is used in the common name for the compound. [4] An example of this is shown in the figure.