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Degenerate base symbols in biochemistry are an IUPAC [2] [3] representation for a position on a DNA sequence that can have multiple possible alternatives. These should not be confused with non-canonical bases because each particular sequence will have in fact one of the regular bases.
Single prime ( ' ) and double prime ( '' ) superscripts denote symmetry and antisymmetry, respectively, with respect to a horizontal mirror plane σ h, one perpendicular to the principal rotation axis. All but the two rightmost columns correspond to the symmetry operations which are invariant in the group. In the case of sets of similar ...
Quantities, Units and Symbols in Physical Chemistry, also known as the Green Book, is a compilation of terms and symbols widely used in the field of physical chemistry. It also includes a table of physical constants , tables listing the properties of elementary particles , chemical elements , and nuclides , and information about conversion ...
IUPAC states that, "As one of its major activities, IUPAC develops Recommendations to establish unambiguous, uniform, and consistent nomenclature and terminology for specific scientific fields, usually presented as: glossaries of terms for specific chemical disciplines; definitions of terms relating to a group of properties; nomenclature of chemical compounds and their classes; terminology ...
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. Eller, Gernot A. (2006). "Improving the Quality of Published Chemical Names with Nomenclature Software" (PDF). Molecules. 9 (11): 915– 928.
IUPAC is a legacy of this meeting, making it one of the most important historical international collaborations of chemistry societies. [11] IUPAC as such was established in 1919. [ 13 ] Since this time, IUPAC has been the official organization with the responsibility of updating and maintaining official organic nomenclature .
Print/export Download as PDF; ... Although most compounds are referred to by their IUPAC systematic names ... OsF 6, OsF 7, OF 2, PdF 2, PdF 4, FSO 2 OOSO 2 F, ...
Print/export Download as PDF; Printable version; In other projects ... This periodic table is the prime form presented at this English wikipedia.