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The monoisotopic mass is very useful when analyzing small organic compounds since compounds with similar weights will not be differentiated if the nominal mass is used. For example, when comparing tyrosine which has a molecular structure of C 9 H 11 NO 3 with a monoisotopic mass of 182.081 Da and methionine sulphone C 5 H 11 NO 4 S which ...
Palmitic acid (hexadecanoic acid in IUPAC nomenclature) is a fatty acid with a 16-carbon chain. It is the most common saturated fatty acid found in animals, plants and microorganisms. [ 9 ] [ 10 ] Its chemical formula is CH 3 (CH 2 ) 14 COOH , and its C:D ratio (the total number of carbon atoms to the number of carbon-carbon double bonds) is 16:0.
Dipalmitoylphosphatidylcholine (DPPC) is a phospholipid (and a lecithin) consisting of two C 16 palmitic acid groups attached to a phosphatidylcholine head-group.. It is the main constituent of pulmonary surfactants, which reduces the work of breathing and prevents alveolar collapse during breathing.
Usually, one is a saturated fatty acid (in the given figure, this is palmitic acid (hexadecanoic acid, H 3 C-(CH 2) 14-COOH); margaric acid (heptadecanoic acid, H 3 C-(CH 2) 15-COOH), identified by Gobley in egg yolk, also belong to that class); and the other is an unsaturated fatty acid (here oleic acid, or 9Z-octadecenoic acid, as in Gobley's ...
Molar mass: 807.339 g·mol −1 Appearance ... Solubility in water. Insoluble Solubility: ... Tripalmitin is a triglyceride derived from the fatty acid palmitic acid ...
The mass of b 2-ion = mass of two amino acid residues + 1. Table 2. Mass of b2-ions in peptide fragmentation [16] Identify a sequence ion series by the same mass difference, which matches one of the amino acid residue masses (see Table 1). For example, mass differences between a n and a n-1, b n and b n-1, c n and c n-1 are the same.
Monoisotopic mass is the sum of the masses of the atoms in a molecule using the most abundant isotope for each element; Monoisotopic element is one of the 26 chemical elements which have only one stable isotope
The monoisotopic mass is the sum of the masses of the atoms in a molecule using the unbound, ground-state, rest mass of the principal (most abundant) isotope for each element. [12] [5] The monoisotopic mass of a molecule or ion is the exact mass obtained using the principal isotopes. Monoisotopic mass is typically expressed in daltons.