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  2. Absolute configuration - Wikipedia

    en.wikipedia.org/wiki/Absolute_configuration

    Absolute configuration showing the determination of the R and S descriptors. In chemistry, absolute configuration refers to the spatial arrangement of atoms within a molecular entity (or group) that is chiral, and its resultant stereochemical description. [1]

  3. Butyl group - Wikipedia

    en.wikipedia.org/wiki/Butyl_group

    In that progression, Butyl (containing 4 carbon atoms) is the fourth, and the last with preferred IUPAC name derived from its history. The word "butyl" is derived from butyric acid, a four-carbon carboxylic acid found in rancid butter. [1] The name "butyric acid" comes from Latin butyrum, butter.

  4. IUPAC nomenclature of organic chemistry - Wikipedia

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

    ChemAxon Name <> Structure – ChemAxon IUPAC (& traditional) name to structure and structure to IUPAC name software. As used at chemicalize.org; chemicalize.org A free web site/service that extracts IUPAC names from web pages and annotates a 'chemicalized' version with structure images. Structures from annotated pages can also be searched.

  5. Triptane - Wikipedia

    en.wikipedia.org/wiki/Triptane

    Triptane, or 2,2,3-trimethylbutane, is an organic chemical compound with the molecular formula C 7 H 16 or (H 3 C-) 3 C-C(-CH 3) 2 H. It is therefore an alkane, specifically the most compact and heavily branched of the heptane isomers, the only one with a butane (C 4) backbone.

  6. Drug nomenclature - Wikipedia

    en.wikipedia.org/wiki/Drug_nomenclature

    Drug nomenclature is the systematic naming of drugs, especially pharmaceutical drugs.In the majority of circumstances, drugs have 3 types of names: chemical names, the most important of which is the IUPAC name; generic or nonproprietary names, the most important of which are international nonproprietary names (INNs); and trade names, which are brand names. [1]

  7. 3-Methylpentane - Wikipedia

    en.wikipedia.org/wiki/3-Methylpentane

    It is of similar structure to the isomeric 2-methylpentane, which has the methyl group located on the second carbon of the pentane chain. As of early 1990s, it was present in American [3] and European [4] gasoline in small amounts, and by 2011 its share in US gas varied between 1.5 and 6% [5] It has close research and motor octane numbers of 74 ...

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    mail.aol.com

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  9. Amide (functional group) - Wikipedia

    en.wikipedia.org/wiki/Amide_(functional_group)

    Structures of three kinds of amides: an organic amide (carboxamide), a sulfonamide, and a phosphoramide. In chemistry, the term amide (/ ˈ æ m aɪ d / or / ˈ æ m ɪ d / or / ˈ eɪ m aɪ d /) [1] [2] [3] is a compound with the functional group R n E(=O) x NR 2, where x is not zero, E is some element, and each R represents an organic group or hydrogen. [4]