Reference

Insecticidal xanthene dyes

Insecticidal xanthene dyes. Crounse, Nathan Norman; Heitz, James Robert (Sterling Drug, Inc., USA). Eur. Pat. Appl. EP 146059 A2 26 Jun 1985, 44 pp. DESIGNATED STATES: R: AT, BE, CH, DE, FR, GB, IT, LI, NL, SE. (English). (European Patent Organization). CODEN: EPXXDW. CLASS: ICM: A01N043-16. ICS: A01N061-00. APPLICATION: EP 84-114592 30 Nov 1984. PRIORITY: US 83-557507 2 Dec 1983; US 84-584833 29 Feb 1984. DOCUMENT TYPE: Patent CA Section: 5 (Agrochemical Bioregulators) Certain water-insol. xanthene dyes, e.g. erythrosin B [16423-68-0], phloxin B [18472-87-2], rose bengal [11121-48-5], octabromofluorescein [94418-47-0], and fluorescein [2321-07-5], (free acid or Al lake) have photodynamic insecticidal activity superior to their water-sol. Na salt forms, esp. when combined with a dispersant. Thus, the 24 h LC50 (median lethal concn.) for erythrosin B to Culex larvae was 10-fold more in the presence of Na lauryl sulfate [151-21-3]; also, erythrosin B was one order of magnitude more toxic than its Na salt to Culex. There was no difference in the toxicity of erythrosin B and fluorescein due to different dispersants. The toxicities of erythrosin B Al lake [12227-78-0] and erythrosin B to Culex were similar in the presence of the dispersant, whereas the Al lake without the dispersant was less toxic than the free acid. No significant differences were found between the toxicities of xanthene dye mixts. and the toxicities of individual components.

Physical methods for the analysis of molecular interactions in dyes utilizable in viral biology studies

Physical methods for the analysis of molecular interactions in dyes utilizable in viral biology studies. Zaharia, C. N. ("Stefan S. Nicolau" Inst. Virol., Bucharest, Rom.). Rev. Roum. Med., Virol., 28(1), 67-73 (English) 1977. CODEN: RRMVDQ. DOCUMENT TYPE: Journal CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Section cross-reference(s): 9, 22 The mol. interactions in soln. of dyes used in viral biol. studies and model compds. as a function of concn. ad presence of inorg. ions were detd. using spectrophotometric microcryoscopic, isothermic distn., and isopiestic methods and indicated that spectral behavior varies with concn. and inorg. ions. Among the dyes studied are Safranine O [477-73-6], Erythrosine [16423-68-0], Phloxine B [18472-87-2], Gallamine Blue [1563-02-6], and Alizarin Cyanine G [1326-41-6].