Carvedilol dihydrogen phosphate hemihydrate: a powder study.

IN THE CATION OF THE TITLE COMPOUND [SYSTEMATIC NAME: 3-(9H-carbazol-4-yl-oxy)-2-hydr-oxy-N-[2-(2-methoxy-phen-oxy)eth-yl]propan-1-aminium dihydrogen phosphate hemihydrate], C(24)H(27)N(2)O(4) (+)·H(2)PO(4) (-)·0.5H(2)O, the mean planes of the tricyclic ring system and the benzene ring form a dihedral angle of 87.2 (2)°.

[The role of the monoaminergic component in realizing the effect of sydnocarb on the differentiation of visual stimuli].

In the experiments on cats by the method of conditioned defensive reflexes there was studied the effect of a psychostimulant sydnocarb on differentiation of short-term and long-term visual stimuli, latencies of the responses to differentiated and single visual stimuli, the number of interstimulus responses, the time of taking a decision. The serotoninergic, dopaminergic and adrenergic substances were used to analyse the influences on the mediator systems. Syndocarb action was found to be mediated by the noradrenergic and serotoninergic systems.