The title mol-ecular salt, C8H13N2 (+)·Br(-), crystallizes with two independent 3-amino-pyridinium cations and two bromide anions in the asymmetric unit (Z' = 2). In the pyridine ring, the N atom is alkyl-ated by a propyl group. The dihedral angle between the mean planes of the pyridinium ring and the propyl group is 84.84 (2)° in cation A, whereas the corresponding angle is 89.23 (2)° in catio...

In the crystal structure of the title compound, C(8)H(10)BrN(2)O(+)·Br(-), inter-molecular N-H⋯Br hydrogen bonds link the mol-ecules into infinite chains along [001]. The inclined angle between the pyridine ring plane and the plane defined by the acid amide group is 63.97 (4)°.

In the crystal structure of the title compound, C(10)H(13)N(2)O(4) (+)·Br(-), inter-molecular N-H⋯Br and N-H⋯(O,Br) hydrogen bonds link the cations and anions into a two-dimensional network parallel to the ab plane.

The turbidimetric methods here described are based on the formation of relatively insoluble complexes between isolated acid mucopolysaccharides and cetyltrimethylammonium bromide.’ Some of the properties of these complexes have recently been described by Scott (1). We found that the amount of turbidity developed when the cetyltrimethylammonium bromide is added to a solution of acid mucopolysacc...

This document lists citations for peer-reviewed journal articles that support a physiological basis for MCS. Disruption of the blood-brain barrier and neuronal cell death in cingulate cortex, dentate gyrus, thalamus, and hypothalamus in a rat model of Gulf-War syndrome. combined exposure to low doses of pyridostigmine bromide, DEET, and permethrin produce neurochemical and neuropathological alt...

A total of 10 cyanogen bromide peptides were isolated from the S-beta-carboxymethyl iron protein of nitrogenase. Purification of these peptides was performed mainly by gel filtration on Sephadex G-50; by ascending paper chromatography using the solvent system of pyridine, isoamyl alcohol, 0.1 M ammonium hydroxide; and also, in some cases, with additional steps such as anion exchange column chro...

BACKGROUND Patients admitted with acute exacerbation of chronic obstructive pulmonary disease (COPD) are often prescribed ipratropium bromide in combination with a beta 2 agonist such as salbutamol. Studies have not shown any benefit in adding ipratropium bromide to salbutamol in acute exacerbations of COPD, but these studies have only assessed patients for 60-90 minutes and short term studies ...

Photoluminescence of |22|Paracyclophane and p-Xylene in the Presence of Silver Ions M. Zander Laboratory of Rütgerswerke AG, Castrop-Rauxel Z. Naturforsch. 39a, 10091010 (1984); received August 18. 1984 Phosphorescence spectra and phosphorescence lifetimes of [22]paracyclophane (I) and p-xylene have been mea­ sured in ethanol glass at 77 K in the presence of silver Perchlorate at various concen...