Abstract: Provided is a composition for reducing serum uric acid level, which contains glycine and tryptophan. The serum uric acid level in a subject can be decreased when the subject intakes the composition.

Abstract: Provided is a composition for reducing serum uric acid level, which contains glycine and tryptophan. The serum uric acid level in a subject can be decreased when the subject intakes the composition.

Abstract: The art relates to provision of a method for manufacturing an (meth)acrylic polymerizable monomer that can be used in various applications, such as an optical material, a resist material, a coating material and a laminate material, and provision of a new ?-(meth)acryloyloxy-?-butyrolactone compound by applying the manufacturing method. The method for manufacturing the ?-(meth)acryloyloxy-?-butyrolactone compound is described, in which a (meth)acrylate compound having a carbonyl group and a ketene compound are condensed and isomerized. Further, the manufacturing method is applied to the new ?-(meth)acryloyloxy-?-butyrolactone compound.

Abstract: The art relates to provision of a method for manufacturing an (meth)acrylic polymerizable monomer that can be used in various applications, such as an optical material, a resist material, a coating material and a laminate material, and provision of a new ?-(meth)acryloyloxy-?-butyrolactone compound by applying the manufacturing method. The method for manufacturing the ?-(meth)acryloyloxy-?-butyrolactone compound is described, in which a (meth)acrylate compound having a carbonyl group and a ketene compound are condensed and isomerized. Further, the manufacturing method is applied to the new ?-(meth)acryloyloxy-?-butyrolactone compound.

Abstract: An aldehyde derivative represented by the general formula (2) is reacted with ketene in the presence of a Lewis acid catalyst to produce a novel 2-oxetanone derivative (1), which is then purified to a 2-oxetanone derivative having a high trans-isomer purity, and then converted to a vinyl derivative (3) through decarboxylation reaction.

Abstract: An aldehyde derivative represented by the general formula (2) is reacted with ketene in the presence of a Lewis acid catalyst to produce a novel 2-oxetanone derivative (1), which is then purified to a 2-oxetanone derivative having a high trans-isomer purity, and then converted to a vinyl derivative (3) through decarboxylation reaction.

Abstract: A base catalyst, obtained by formulating at least one alkali metal compound selected from the group consisting of alkoxides, hydroxides and oxides of alkali metals and an alkaline-earth metal oxide in a ratio of “the weight of alkaline metal compound/the weight of alkaline-earth metal oxide”=0.005 to 1, is used in a reaction of an aldehyde to produce a glycol monoester, thereby providing a base catalyst with an improved efficiency which can be applied to aldol reaction or the like and which has high activity to give target product in a high selectivity.

Abstract: A base catalyst, obtained by formulating at least one alkali metal compound selected from the group consisting of alkoxides, hydroxides and oxides of alkali metals and an alkaline-earth metal oxide in a ratio of “the weight of alkaline metal compound/the weight of alkaline-earth metal oxide”=0.005 to 1, is used in a reaction of an aldehyde to produce a glycol monoester, thereby providing a base catalyst with an improved efficiency which can be applied to aldol reaction or the like and which has high activity to give target product in a high selectivity.

Abstract: A portable personal computer having a display unit for displaying graphics, characters, etc. on a screen and an operation unit for inputting information, includes an upper panel having the display unit, a lower panel having the operation unit, an electronic camera which is at least partially designed in a spherical shape, and a mount recess portion having a curved-face support portion which is secured to a part of the upper panel and brought into contact with the spherical surface of the electronic camera to rotatably hold the electronic camera.

Abstract: A catalyst which causes no occurrence of waste water due to neutralization, water-washing, etc. and can yield the objective product with a high activity and a superior selectivity is provided, and when a specified barium-supporting calcium oxide or a composite oxide of barium oxide with calcium oxide is used as catalyst, such a catalyst is applicable, for example, to a production of a carbonyl compound derivative from a carbonyl compound.