The possible presence of a urea transporter in the kidney of the gulf toadfish (Opsanus beta) and further characterization of the pulsatile facilitated transporter previously identified in its gills were investigated by comparing the extra-renal and renal handling of two urea analogues with the handling of urea. Toadfish were fitted with caudal artery and indwelling urinary ureteral catheters a...

The structure of the title compound, C(14)H(13)NO, resembles those of N-(2-chloro-phen-yl)benzamide, 2-chloro-N-phenyl-benzamide, N-(2,3-dichloro-phen-yl)benzamide, N-(3,4-dichloro-phen-yl)benzamide and 2-chloro-N-(2-chloro-phen-yl)benzamide with similar bond parameters. The benzene and methylphenyl rings have a dihedral angle of 63.41 (5)°, while the amide group makes a dihedral angle of 20.5 ...

The analysis of [5,10-dibromo-15,20-bis(4-methylphenyl)porphyrinato]palladium(II), [Pd(C34H22Br2N4)], and [5,10-dibromo-15,20-bis(4-methylphenyl)porphyrinato](methanol)zinc(II), [Zn(C34H22Br2N4)(CH4O)], reveals a small but localized influence of the bromine residues on the conformation of the macrocycle. A comparison of the 5,10-dibromo substituent pattern with literature data for 5,15-dibromop...

A series of thiourea-amine bifunctional catalysts have been developed by a rational combination of prolines with cinchona alkaloids, which are connected by a thiourea motif. The catalyst 3a, prepared from L-proline and cinchonidine, was found to be a highly efficient catalyst for the conjugate addition of ketones/aldehydes to a wide range of nitroalkenes (up to 98/2 dr and 96% ee). The privileg...

A LDOHEXOSES REACT WITH o-toluidine in the presence of glacial acetic acid to produce a green color, which follows Beer’s law over a wide range of concentrations. This reaction is relatively selective for glucose. An improvement in manual procedures involving this reaction (1, 2) was reported by Feteris (3), who determined glucose directly on serum without deproteiization. She also improved the...