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[15] [16] The term "methyl" was derived in about 1840 by back-formation from "methylene", and was then applied to describe "methyl alcohol" (which since 1892 is called "methanol"). Methyl is the IUPAC nomenclature of organic chemistry term for an alkane (or alkyl) molecule, using the prefix "meth-" to indicate the presence of a single carbon.
Methyl compounds are chemical compounds formally derived from methane by replacement of one hydrogen atom with other atoms or functional groups. Methyl compounds contain the methyl group, CH 3, and have the general formula CH 3 X, where X is any chemical element or group.
The term "methyl" was derived in about 1840 by back-formation from "methylene", and was then applied to describe "methyl alcohol". This was shortened to "methanol" in 1892 by the International Conference on Chemical Nomenclature. [29] The suffix-yl, which, in organic chemistry, forms names of carbon groups, is from the word methyl.
Molecular structure of caffeine. Methyl groups are implied, but not visualized.. In chemical graph theory and in mathematical chemistry, a molecular graph or chemical graph is a representation of the structural formula of a chemical compound in terms of graph theory.
The term alkyl is intentionally unspecific to include many possible substitutions. An acyclic alkyl has the general formula of −C n H 2 n +1 . A cycloalkyl group is derived from a cycloalkane by removal of a hydrogen atom from a ring and has the general formula −C n H 2 n −1 . [ 2 ]
An ester of carboxylic acid.R stands for any group (organic or inorganic) and R′ stands for organyl group.. In chemistry, an ester is a compound derived from an acid (organic or inorganic) in which the hydrogen atom (H) of at least one acidic hydroxyl group (−OH) of that acid is replaced by an organyl group (−R).
The term may be used to broadly describe many different functional groups, e.g. a methyl, ethyl, or propyl group. alkyne. Also acetylene. Any unsaturated hydrocarbon containing at least one carbon–carbon triple bond. allomer A substance that differs in chemical composition but has the same crystalline structure as another substance. allotrope
The term alcohol originally referred to the primary alcohol ethanol (ethyl alcohol), which is used as a drug and is the main alcohol present in alcoholic drinks. The suffix -ol appears in the International Union of Pure and Applied Chemistry (IUPAC) chemical name of all substances where the hydroxyl group is the functional group with the ...