molecular formula


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molecular formula:

see formulaformula,
in chemistry, an expression showing the chemical composition of a compound. Formulas of compounds are used in writing the equations (see chemical equations) that represent chemical reactions. Compounds are combinations in fixed proportions of the chemical elements.
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molecular formula

[mə′lek·yə·lər ′fȯr·myə·lə]
(chemistry)
A chemical formula that indicates the actual numbers and kinds of atoms in a molecule, but not the chemical structure.

molecular formula

a chemical formula indicating the numbers and types of atoms in a molecule
References in periodicals archive ?
The molecular formula of the compound was found to be [C.sub.16][H.sub.18][O.sub.7].
The length of the side chain was determined from the molecular formula by subtracting of C5H4N to give C13H28NO.
ESIMS of 1 in negative mode displayed pseudo-molecular ion at m/z 180, whereas, high resolution analysis of the same ion (HR-ESIMS m/z 180.0658 [M-H-]) depicted the molecular formula C9H11NO3.
Methyl ethyl ketone is an organic compound having the molecular formula C4H8O.
CAS registry number, Merck index number, an illustration of the chemical structure, chemical and dye class, molecular formula and weight, color change at pH, pKa, physical form, solubility, melting point, UV-visibility, synthesis, major applications and safety/toxicity data.
[USPRwire, Wed Oct 24 2018] Hexafluoropropylene Market: Introduction Hexafluoropropylene (HFP) is a fluorocarbon alkene, whose molecular formula is C3F6, in which the hydrogen atoms present in propylene are substituted by fluorine atoms.
Light brown solid; Melting point: 194 AoC; Molecular formula: C19H18N4O3; UV/Vis[DMSO](I>>max): 308 nm; FT-IR[KBr](cm-1): 1217.08 [C-N], 1454.32 [C=C], 1643.35 [C=N], 1697.35 [C=O amide], 3217.56 [-NHamide], 1026.13 [C-OH]; GC-MS (m/z): 349 [M]+,97 [C6H4O]+, 147 [C7H6N2O]+, 313 [C18H17N3O2]+, 119 [C7H5NO]+, 169 [C8H6N2O2]+, 335 [C19H16N4O2]+ .
The molecular formula for sucrose is C12H22011, the International Union of Pure and Applied Chemistry International Chemical Identifier (InChl) for sucrose is 1S/C12H22O11/c13-l-4-6(16)8(18)9(19)11(21-4)23-12(3-15)10(20)7(17)5(2-14)22-12/h4-11,13-20H,1-3H2/t4-,5-,6-,7-,8+,9-,10+,11-,12+/m1/s1, the InChl Key for sucrose is CZMRCDWAGMRECN-UGDNZRGBSA-N, the U.S.
[ClickPress, Mon Sep 02 2013] Propionic acid is a three-carbon carboxylic acid with a molecular formula of CH3CH2COOH.
The new edition contains more compounds and a searchable CD-ROM that features 33 indexes, in categories such as density, melting point, molecular formula, supplier, and type.
In addition to the structure diagram, the file record for each substance includes the CAS Registry Number, molecular formula, CA index name, synonyms, and a list of STN files that cite the substance.

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