In the crystal of the title compound, C(19)H(14)FNO(2), the mol-ecules are linked by C-H⋯O hydrogen bonds in translational chains along the b axis. The dihedral angles formed by the quinoline system with the fluoro-benzene ring and the acet-oxy group are 8.15 (3) and 77.42 (4)°, respectively.

The title compound, C24H18N2O4, crystallizes as a syn-conformer, with dihedral angles between the quinoxaline moiety and the acet-oxy-substituted benzene rings of 53.46 (3)° and 54.78 (3)°. In the crystal, the mol-ecules form chains along [100] via C-H⋯O inter-actions.

introduction: lead is one of the most important environmental pollutants due to its vast use in various industries. lead accumulation in different organs, especially the brain, liver and kidneys can cause serious health problems. lead exposure is more dangerous during fetal period and childhood. materials and methods: timed pregnant female rats divided into 6 groups. group 1served as control gr...

In the title compound, C(11)H(11)NO(3), a modified synthetic acetate derivative, the four memebered β-lactam ring is roughly planar, with a maximum deviation of 0.21 (3) Å, and makes a dihedral angle of 81.46 (14)° with the phenyl ring. In the crystal, a single N-H⋯O hydrogen bond links mol-ecules into a chain parallel to the a axis and thus stabilizes the structure. Although the absolute confi...

In the title compound, C(24)H(21)NO(4)S, the indole ring system makes dihedral angles of 77.8 (1) and 85.4 (1)°, respectively, with the S- and C-bound phenyl rings. The mol-ecular structure is stabilized by a weak intra-molecular C-H⋯O hydrogen bond. In the crystal, a weak inter-molecular C-H⋯O hydrogen bond and a C-H⋯π inter-action are also observed.

The aim of this study was to evaluate the nutrient digestibility, ruminal fermentation and microbial protein synthesis of mid-lactating cows fed high dietary levels of monensin. Twelve Holstein cows were distributed into four 3 × 3 latin squares and assigned to the following treatments: control (CON), monensin 24 (M24, addition of 24 mg monensin/kg diet DM) and monensin 48 (M48, addition of 48 ...

Cocconeis diminuta, a marine benthic diatom, metabolizes acetate and lactate-(14)C. In the light, the major product was lipid, whereas in the dark, CO(2) was the major product. Analysis of proteins synthesized in the presence of acetate or lactate showed that radioactivity was incorporated predominantly into the glutamate family of amino acids and those amino acids related directly to the subst...

The pathway of propionate conversion in a syntrophic coculture of Smithella propionica and Methanospirillum hungatei JF1 was investigated by (13)C-NMR spectroscopy. Cocultures produced acetate and butyrate from propionate. [3-(13)C]propionate was converted to [2-(13)C]acetate, with no [1-(13)C]acetate formed. Butyrate from [3-(13)C]propionate was labeled at the C2 and C4 positions in a ratio of...