Highly sensitive UHPLC—MS/MS method for quantification of ethylenediamine-N,N′-di-2-(3-cyclohexyl) propanoic acid derivatives in mouse serum
نویسندگان
چکیده
منابع مشابه
3-(2-Pyridylaminocarbonyl)propanoic acid
In the crystal structure of the title compound, C(9)H(10)N(2)O(3), the mol-ecules are linked by inter-molecular O-H⋯N and N-H⋯O hydrogen bonds, resulting in chains propagating in [010]. Weak intra-molecular and inter-molecular C-H⋯O inter-actions are also observed.
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In the structure of the title compound, C(10)H(10)O(4), the carboxyl group forms a catemer motif in the [100] direction instead of the expected dimeric structures. The carboxylic acid group is found in the syn conformation and the three-dimensional organization in the crystal is based on C-H⋯O and O-H⋯O interactions.
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The title mol-ecule, C(11)H(13)NO(3), has its propanoic acid group in an extended conformation, such that the mol-ecule is nearly planar, with a mean deviation of 0.036 Å [the maxima being 0.106 (1) and 0.110 (1) Å for the two methyl-ene C atoms]. The NH group forms an intra-molecular hydrogen bond with the acetyl group; in the crystal COOH group forms a centrosymmetric hydrogen-bonded dimer.
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In the title compound, C(9)H(9)FO(3), the dihedral angle between the carboxyl group and the benzene ring is 79.4 (3)°. In the crystal, mol-ecules form centrosymmetric dimers through pairs of classical O-H⋯O hydrogen bonds. These are further linked by weaker C-H⋯O inter-actions, forming a three-dimensional network.
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In this study, a new reaction system for quantitative determination of ascorbic acid was introduced. The developed method is based on inhibitory effect of ascorbic acid on the Orange G-bromate system. The change in absorbance was followed spectrophotometrically at 478 nm. The dependence of sensitivity on the reaction variables including reagents concentration, temperature and time was investiga...
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ژورنال
عنوان ژورنال: Acta Chromatographica
سال: 2017
ISSN: 1233-2356,2083-5736
DOI: 10.1556/1326.2017.29.2.7