structural formula

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Related to structural formula: condensed structural formula

structural formula

A chemical formula that shows how the atoms and bonds in a molecule are arranged.

structural formula

(Chemistry) a chemical formula showing the composition and structure of a molecule. The atoms are represented by symbols and the structure is indicated by showing the relative positions of the atoms in space and the bonds between them: H–C≡C–H is the structural formula of acetylene. See also empirical formula, molecular formula

struc′tural for′mula

a chemical formula showing the linkage of the atoms in a molecule diagrammatically, as H–O–H.

struc·tur·al formula

A chemical formula that shows how the atoms making up a compound are arranged within the molecule. For example, the structural formula of aspirin is CH3COOC6H4COOH, indicating that it is an acetate (CH3COO) of a phenyl (C6H4) organic acid (COOH). Since structural formulas can get quite long, formulas are usually given with all the atoms totaled up instead (in this case, C9H8O4). Compare molecular formula.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.structural formula - an expanded molecular formula showing the arrangement of atoms within the molecule
molecular formula - a chemical formula based on analysis and molecular weight
References in periodicals archive ?
As for the party's structural work, the Popular Current said that abandoning the Popular Front's first structural formula (represented by the council of secretaries, the central executive board and regional and local coordinators) has revealed several organisational problems that have affected the Popular Front's electoral performance during the municipal elections.
Retention No time/min CAS Name Structural formula 1 4.14 100-21-0 Terephthalic acid [FORMULA NOT REPRODUCIBLE IN ASCII] 2 6.31 65-85-0 Benzoic acid [FORMULA NOT REPRODUCIBLE IN ASCII] TABLE 2.
Nickel--zinc-ferrite had spinel structure:Normal spinel structure, where all [Me.sup.2+] ions occupy A sites; structural formula of such ferrites is [Me.sup.2+][[Fe.sub.2.sup.3+]] [O.sub.4.sup.2-].
(A) UVA Filters (WS) Water Soluble Filters #: 11 active UV Filters Normal Font: 6 rarely or never used UV Filters TABLE III: SPECIFICATIONS OF BEMOTRIZINOL AND BISOCTRIZOLE (6) Chemical Name: Tinosorb S Structural Formula: Molecular Formula: [C.sub.38][H.sub.49] [N.sub.3][O.sub.5] Molecular Weight: 627.8 g/mol INCI name: Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine (BEMT) USAN name: Bemotrizinol CAS-No: 187393-00-6 Physical Appearance: Light yellow powder [lambda]max: 310 nm and 340 nm E(1%,1cm): 819 (in ethanol, 340nm) [lambda]c 373 nm (critical wavelength) UVA/UVB ratio: 0.73 Recommended Level (%) 10% in Australia and EU.
Difluprednate is represented by the following structural formula:
Structural formula of these molecules were investigated from Chemspider, Pubcheme and Wikipedia, respectively ,and the orginal molecular structure of all compounds were found, their skeletal structures drawn with Chemschetch, Chemaxon, version 5.4 software in order to reach 3D structures of molecules within MDL SD file, the same software is used with molecular mechanics algorithm for structural optimization.
99, molecular formula [C.sub.4] [H.sub.5] NS and structural formula is C[H.sub.2] = CH-C[H.sub.2]-NCS.
The structural formula for various phases that involve ferrous and ferric iron was calculated using the approach recommended by Schumacher (Appendix 2 of Leake et al.
Each monograph includes information on nonproprietary names, synonyms, chemical name and Chemical Abstracts Service registry number, empirical formula and molecular weight, structural formula, functional category, applications in pharmaceutical formulation or technology, description, pharmacopoeial specifications, typical properties, stability and storage conditions, incompatibilities, method of manufacture, safety, handling precautions, regulatory status, related substances, specific and general references, and date of revision.
Since some (or all) of these quantities may not be known for not-so-well-described refrigerants, Brown used group contribution methods to estimate these parameters, with the only required input being the refrigerant's normal boiling point temperature (NBP) and its structural formula.

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