Fluorescent Labeling Reagents. Part 1. 3-(4-(Bromomethyl)phenyl) -7-(diethylamino)-2H-1-benzopyran-2-one (MPAC-Br): A Highly Sensitive Fluorescent Derivatization Reagent for Carboxylic Acids in High-Performance Liquid Chromatography.
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چکیده
منابع مشابه
2-[2-(Trifluoromethyl)phenyl]-2H-1-benzopyran-4(3H)-one
In the title compound, C(16)H(11)F(3)O(2), the γ-pyran-one ring adopts an envelope conformation with the chiral C atom standing out of the ring plane. In the crystal, molecules are linked by C-H⋯O and C-H⋯F inter-actions.
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2-(2-Aminoethyl)-1-methylpyrrolidine and N-(3-aminopropyl)pyrrolidine (NAPP) were found to be selective and sensitive derivatization reagents for carboxylic acid by high-performance liquid chromatography (HPLC) with electrogenerated chemiluminescence detection using tris(2,2'-bipyridine)ruthenium(II). Free fatty acids and ibuprofen were used as model compounds of carboxylic acids, and the deriv...
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A highly sensitive method for the determination of bisphenol-A in water with semi-micro column high-performance liquid chromatography using 2-methoxy-4-(2-phthalimidinyl)phenylsulfonyl chloride as a fluorescent labeling reagent has been developed. The labeling reaction was carried out at 70 degrees C for 20 min in borate buffer (pH 9.5). The derivative eluted at 11.6 min on a reversed-phase col...
متن کامل8-Benzoyl-7-hydroxy-4-methyl-2H-1-benzopyran-2-one monohydrate
In the title compound, C(17)H(12)O(4)·H(2)O, the coumarin ring system is approximately planar with a maximum atomic deviation of 0.011 (2) Å, and is nearly perpendicular to the phenyl ring at a dihedral angle of 86.63 (9)°. In the crystal, mol-ecules are linked by classical O-H⋯O and weak C-H⋯O hydrogen bonds. π-π stacking is also present [centroid-centroid distance = 3.6898 (12) Å].
متن کامل2-Methoxy-3-[(3,4,5-trimethoxyanilino)methylidene]-3,4-dihydro-2H-1-benzopyran-4-one
The title mol-ecule, C(20)H(21)NO(6), adopts a keto-amine tautomeric form. An intra-molecular N-H⋯O hydrogen bond, classified as a resonanse-assisted hydrogen bond, influences the mol-ecular conformation; the two benzene rings form a dihedral angle of 24.6 (1)°. In the crystal structure, weak inter-molecular C-H⋯O hydrogen bonds link mol-ecules into chains propagating along [001].
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 1996
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.44.793