Abstract: An organic electroluminescent element using a compound represented by the following general formula (I) emits dark blue light and has small changes in the chromaticity and in the driving voltage even after driving for a long period of time: wherein R1 to R6; Q1 and Q2; X1, X2, X3 and X4 are as defined herein.

Abstract: Hypoxia-activated prodrugs can be used to treat cancer when administered alone or in combination with one or more anti-neoplastic agents.

Abstract: The present invention includes methods, articles, compositions and colorant dyes and pigments that include biocidal N-halamine dye composition having two or more heterocyclic ring structures attached to one or more N-halamine groups, wherein one or more halogens associate with the one or more one or more N-halamine groups to affect biocidal activity.

Abstract: The present invention relates to a method of determining voltage changes, e.g. in cell membranes, by means of a voltage-sensitive dye.

Abstract: 8-Substituted-2,6-methano-3-benzazocines of general structure I in which A is —CH2—OH, —CH2NH2, —NHSO2CH3, 1

Abstract: Polycyclic vat dyes of the general formula I ##STR1## where X is hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, halogen or nitro, obtainable by reacting (9)-benzo-5-aminoanthraquinonyl(2,1-h)-8-azapyrenone-3(II) ##STR2## with a benzoyl chloride of the formula III ##STR3## in a dipolar aprotic solvent.

Abstract: This invention relates to compounds having the following formula ##STR1## which are useful in the inhibition of platelet aggregation. This invention also relates to pharmaceutical compositions of such phenyl amidine thio derivatives.

Abstract: Vat dyes which dye cellulosic material in a grey or black shade of good fastness properties are obtained by brominating dibenzanthrone in 80-100% sulfuric acid to a bromine content of 24 to 32%, and reacting the bromination product with 1-aminoanthraquinone.

Abstract: Dyes of the formula ##STR1## where R.sup.1 is hydrogen, C.sub.1 -C.sub.6 -alkyl or C.sub.2 -C.sub.6 -alkenyl, R.sup.2 and R.sup.3 independently of one another are hydrogen, C.sub.1 -C.sub.5 -alkyl or C.sub.2 -C.sub.5 -alkenyl, R.sup.4 is C.sub.1 -C.sub.12 -alkyl or hydroxy-C.sub.2 -C.sub.4 -alkyl, X.sup..crclbar. is one equivalent of an anion, mis from 0 to 5 and n is from 0 to 5, with 1.ltoreq.(m+n).ltoreq.5, and F is an (m+n)-valent radical of a monoazo dye, a disazo dye, a polyazo dye, a quinophthalone, a bis-dioxazine, a compound of the 5,6-arylo-2-pyrone series, a naphtholactam dye, a triphenylmethane dye, a xanthene dye, a phthalocyanine, an indigoid, an anthraquinone dye containing one or more phenyl or naphthyl groups, a more highly fused carbonyl-containing dye, a quinacridone, a perylene-3,4,9,10-tetracarboxylic acid diimide, an anthrapyrimidine, a pyrazoloanthrone, a diaminonaphthoquinone, a naphthazarine or a naphthalene-1,4,5,8-tetracarboxylic acid diimide.

Abstract: Useful vat dyestuffs can be prepared by reacting a mixture of aminoanthraquinones containing 65-80% 1-aminoanthraquinone and 20-35% of a mixture containing 2-aminoanthraquinone and 1,5- and 1,8-diaminoanthraquinones with, for example, a halogenated benzanthrone or anthraquinone. The mixture of aminoanthraquinones can be obtained by nitrating anthraquinone in sulfuric acid and thereafter reducing the resulting nitroanthraquinones.

Abstract: A vat dye obtained by heating a condensation product, which itself has been prepared by heating 3,9-di-(1-anthraquinonylamino)-benz[d,e]anthrone in an aluminum chloride/picoline or aluminum chloride/quinoline melt in the presence of sulfuryl chloride or thionyl chloride, in a melt of an alkali metal hydroxide in an alcohol or glycol or aqueous glycol.The dye gives deep clear brown dyeings having good fastness characteristics.