LC-MS/MS method to determine hydrophobic N-alkyloxy substituted amidines: N-(2-ethylhexyloxy)pyridine-2-carboximidamide, N-(2-ethylhexyloxy)pyridine-3-carboximidamide, N-(2-ethylhexyloxy)pyridine-4-carboximidamide, N-decyloxy pyridine-2-carboximidamide, N-decyloxypyridine-3-carboximidamide and N-decyloxypyridine-4-carboximidamide was developed and validated in terms of linearity, precision and ...

Metal organic frameworks such as copper(II) monocarboxylate (formate and benzoate) pyridine derivatives and zinc(II) monocarboxylate (p-phenyl benzoate and benzoate) pyridine derivatives have been prepared. The complexes were synthesized at room temperature using pyridine or p-phenyl pyridine to grow single crystals, which were subsequently analyzed using single-crystal X-ray analysis. These st...

It has been shown previously that the diphosphopyridine nucleotidase from pig brain is capable of catalyzing an exchange reaction between various substituted pyridine compounds and diphosphopyridine nucleotide to form analogues of diphosphopyridine nucleotide (l-4). The variation in reactivity of the various analogues prepared in this manner indicates the importance of the grouping in position ...

The syn theses of diaquabis (3-hydroxyflavonato) cobalt (II) and bis(pyridine) bis (3hydroxyflavonato)cobalt(II) are described. Results from infrared spectra clearly show that the 3-hydroxyflavonato anion forms a chelate through the 3-hydroxy 4-keto groups. The electronic spectra of both complexes indicate that cobalt(II) has an octahedral geometry. Quantitative analyses of the isolated product...

In 1952, Korkes (1) reported that cell-free extracts of Clostri&urn kluyveri were capable of reducing pyridine nucleotides with hydrogen. Subsequent investigations have shown that a heatstable cofactor of undetermined nature present in boiled cell extracts was required (2). Pyridine nucleotide reduction with hydrogen has since been demonstrated in a number of other microorganisms (3-5). The pre...

In the title compound, [Ni(2)(CO(3))(C(5)H(6)N(2))(8)(H(2)O)]Cl(2)·5H(2)O, one of the the Ni(II) ions is six-coordinated in a distorted octa-hedral geometry, with the equatorial plane defined by four pyridine N atoms from four amino-pyridine ligands, the axial positions being occupied by one water O and a carbonate O atom. The other Ni(II) ion is also six-coordinated, by four other pyridine N a...

In the title 3-cyano-pyridine derivative, C21H19N3O4, the 3-cyano-substituted pyridine ring forms dihedral angles of 2.35 (5) and 41.60 (5)° with the unsubstituted pyridine and 2,4,5-trimeth-oxy-substituted benzene rings, respectively. The dihedral angle between the unsubstituted pyridine and benzene rings is 39.84 (5)°. The meth-oxy groups form Cmeth-yl-O-C-(C,N) torsion angles in the range 0....

Several new 2,6-bis(substituted)pyridine ligands and 2,6-bis(substituted)pyridine Ag(I) nitrate complexes were synthesized and characterized spectroscopically. The newly synthesized ligands include pyridine-2,6-bis(3-oxopropanenitrile) (1), pyridine-2,6-bis(2-cyano-N-phenyl-3-oxopropanethioamide) (2), and pyridine-2,6-bis((E)-2-(2-phenylhydrazono)-3-oxopropanenitrile) (3). The newly synthesized...

The asymmetric unit of the title compound, [Fe(NCS)2(C6H4N2)2(H2O)2]·2C6H4N2, comprises one FeII cation occupying an inversion centre as well as one thio-cyanate anion, one water mol-ecule and two 4-cyano-pyridine mol-ecules in general positions. The iron cations are coordinated by two N-bonded thiocyanate anions, two (pyridine)N-bonded 4-cyano-pyridine ligands and two water mol-ecules into dis...

The new synergic base [PMDETA.K(TMP)(Et)Zn(Et)] selectively zincates 4-(dimethylamino)pyridine at the 2-position and 4-methoxypyridine at the 3-position, to afford bimetallic potassium pyridylzinc complexes each displaying a novel, but remarkably different, structure.