A composition comprising a compound of formula (Va) wherein n is 1 or 2 and wherein m is 1 or 2, with n and m preferably both being 1 or both being 2, more preferably both being 1, and/or, preferably and, a compound of formula, wherein n is 1 or 2 and wherein m is 1 or 2, with n and m preferably both being 1 or both being 2, more preferably both being 1, and wherein at least 90 weight-% of the composition consist of compounds of formula (Va) and formula (Vb).

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The invention discloses an anthracene-containing derivative, the production process thereof and an organic electroluminescent display device, wherein the anthracene-containing derivative has a general molecular structural formula of Formula I, wherein, R.sub.1 group is selected from an aromatic group or a fused aromatic group having a carbon atom number of 6 to 18, R.sub.2 group is selected from an amine group. By using the above described anthracene-containing derivative as a green phosphorescent host material, a green fluorescent host material, a hole injection material, or a hole transporting material in an organic electroluminescent display device, the light emitting efficiency and the light emitting brightness of the organic electroluminescent display device may be improved.

The invention discloses an anthracene-containing derivative, the production process thereof and an organic electroluminescent display device, wherein the anthracene-containing derivative has a general molecular structural formula of Formula I, wherein, R.sub.1 group is selected from an aromatic group or a fused aromatic group having a carbon atom number of 6 to 18, R.sub.2 group is selected from an amine group. By using the above described anthracene-containing derivative as a green phosphorescent host material, a green fluorescent host material, a hole injection material, or a hole transporting material in an organic electroluminescent display device, the light emitting efficiency and the light emitting brightness of the organic electroluminescent display device may be improved.

The invention relates to processes for preparing 2-methoxymethyl-p-phenylenediamine (I), cosmetically acceptable salts thereof, or mixtures thereof.

The invention relates to processes for preparing 2-methoxymethyl-p-phenylenediamine (I), cosmetically acceptable salts thereof, or mixtures thereof.

The invention relates to processes for preparing 2-methoxymethyl-p-phenylenediamine (I), cosmetically acceptable salts thereof, or mixtures thereof.

The present invention relates to novel anthraquinone derivatives, 2,6-diisohexylanthracene-9,10-dione and 2,7-diisohexyl-anthracene-9,10-dione, preferably to be used for the preparation of hydrogen peroxide, and to a process for the preparation of these anthraquinone derivatives.

The present invention relates to novel anthraquinone derivatives, 2,6-diisohexylanthracene-9,10-dione and 2,7-diisohexyl-anthracene-9,10-dione, preferably to be used for the preparation of hydrogen peroxide, and to a process for the preparation of these anthraquinone derivatives.

A process for producing reduced coenzyme Q.sub.10 includes removing moisture from an aqueous suspension including a reduced coenzyme Q.sub.10-containing microbial cell or a disrupted cell thereof such that a de-moisturized substance is obtained and in contact with an oxidizing atmosphere, and that an oxidized coenzyme Q.sub.10 is produced in an amount of 50 mass % or more relative to a total amount of the oxidized and reduced coenzymes Q.sub.10, and reducing the oxidized coenzyme Q.sub.10 outside a microbial cell such that a reduced coenzyme Q.sub.10 is recovered.

A process for producing reduced coenzyme Q.sub.10 includes removing moisture from an aqueous suspension including a reduced coenzyme Q.sub.10-containing microbial cell or a disrupted cell thereof such that a de-moisturized substance is obtained and in contact with an oxidizing atmosphere, and that an oxidized coenzyme Q.sub.10 is produced in an amount of 50 mass % or more relative to a total amount of the oxidized and reduced coenzymes Q.sub.10, and reducing the oxidized coenzyme Q.sub.10 outside a microbial cell such that a reduced coenzyme Q.sub.10 is recovered.