[UV-spectrophotometry in drug control. 47. Drug substances with chromophores and auxochromes in cyclic and tricyclic systems (benzodiazepine, dibenzoazepine and dibenzodiazepine)]. / UV-Spektrophotometrie in der Arzneimittelkontrolle. 47. Mitteilung: Arzneistoffe mit Chromophoren und Auxochromen in bicyclischen und tricyclischen Systemen (Benzodiazepin, Dibenzoazepin und Dibenzodiazepin.

The results of a systematic examination of the UV/VIS spectra of 10 drug substances with chromophores and auxochromes in bicyclic and tricyclic systems (benzodiazepine, dibenzoazepine and dibenzodiazepine) are described. Influences of substituents and solvents on shifts of the E, K, B and R bands are discussed.

[UV-spectrophotometry in drug control. 41. Drug substances with chromophores and auxochromes in monocyclic compounds (pyrazolone, pyrazolidine, pyridazine, pyrimidine and pyrazine) and bicyclic compounds (benzoxazole, imidazole, benzthiazole and indene)]. / UV-Spektrophotometrie in der Arzneimittelkontrolle. 41. Mitteilung: Arzneistoffe mit Chromophoren und Auxochromen in Monocyclen (Pyrazolon, Pyrazolidin, Pyridazin, Pyrimidin und Pyrazin) und in Bicyclen (Benzoxazol, Benzimidazol, Benzthiazol, Benzthiadiazol und Inden).

The results of a systematic examination of the spectra of 15 drug substances with chromophores and auxochromes in monocyclic (pyrazolone, pyrazolidin, pyridazine, pyrimidine and pyrazine) and bicyclic compounds (benzoxazol, imidazole, benzthiazole and indene) in the UV and visible range were evaluated. Influences of substituents and solvents on shifts of the E, K, B and R bands were discussed.

[UV-spectrophotometry in drug control. 39. Spectrophotometric behavior of substances with chromophores and auxochromes in aliphatic chains, in saturated heterocyclics and the heterocyclic compounds: furan, imidazole, thiazole, thiadiazole and oxadiazole]. / UV-Spektrophotometrie in der Arzneimittelkontrolle. 39. Mitteilung: Spektrophotometrisches Verhalten von Arzneistoffen mit Chromophoren und Auxochromen in aliphatischer Kette, im gesättigten Heterocyclus und in Heterocyclen: Furan, Imidazol, Thiazol, Thiadiazol und Oxadiazol.

The spectra of 22 drug substances with chromophores and auxochromes in the aliphatic chain, in the saturated heterocyclus and in heterocyclic compounds (furan, imidazole, thiazole, thiadiazole and oxadiazole) underwent a systematic investigation and the results obtained were evaluated. Influences of substituents and solvents on shifts of the E, K, B and R bands were discussed.

[UV spectrophotometry in drug control. 37. New active substances containing benzene, pyridine and quinoline chromophores in the molecule. 8. Effect of substitution and solvent]. / UV Spektrophotometrie in der Arzneimittelkontrolle. 37. Mitteilung: Neuere Arzneistoffe mit Benzen-, Pyridin- und Chinolin-Chromophoren im Molekül Teil 8: Einfluss der Substitution und der Lösungsmittel.

The behaviour of 10 new substances with benzene, pyridine and chinoline chromophores was tested in the UV and visible spectral region. Influences of substituents and solvents on shifts of the bands E, K, B and R are discussed.

[UV-spectrophotometry in drug control. 33. New drugs with benzene, pyridine, quinoline and phenanthrene chromophores in the molecule. 6. The effect of substitution and solvents]. / UV-Spektrofotometrie in der Arzneimittelkontrolle. 33. Mitteilung: Neuere Arzneistoffe mit Benzen-, Pyridin-, Chinolin- und Phenanthren-Chromophoren im Molekül. Teil 6: Einfluss der Substitution und der Lösungsmittel.

UV-spectra of 14 new substances with benzene, pyridine, quinoline and phenanthrene chromophores as well as influences of substitutes and solvents on shifts of the bands E, K, B and R are discussed.

[UV spectrophotometry in drug control. 31. Spectrophotometric behavior of drugs with dibenzo-p-thiazine chromophores]. / UV-Spektrofotometrie in der Arzneimittelkontrolle. 31. Mitteilung: Spektrofotometrisches Verhalten von Arzneistoffen mit Dibenzo-p-thiazin-Chromophoren.

The results of a systematic examination of the spectra of 34 drugs with dibenzo-p-thiazine chromophores in the ultraviolet and visible range were evaluated. The substances under study were subdivided into 10 different types corresponding to a different substitution in position 3 and in one case in position 5 of the phenothiazine ring system. All of these types are characterized by the bands E, K and B which are--with only a few exceptions--separated by well developed absorption minima.

[Ultra-violet spectrophotometry in drug control. Part 23: Conclusions from the spectrophotometric behaviour of drugs with pyridine, naphthalene, quinoline and isoquinoline chromophores (author's transl)]. / UV-Spektrofotometrie in der Arzneimittelkontrolle. 23. Mitteilung: Schlussfolgerungen aus dem spektrofotometrischen Verhalten von Arzneimitteln mit Pyridin-, Naphthalen-, Chinolin- und Isochinolin-Chromophoren.

The results from a systematic study of drugs with pyridine, naphthalene, quinoline and isoquinoline chromophores are evaluated and condensed into conclusions. In addition to previously reported findings, the ultra-violet and visible spectra of a further nine drugs containing the mentioned chromophores are presented.