Abstract: This invention is intended to discover a novel solvent that can be used as an alternative to toluene in the step of deprotection in the method of solid-phase nucleic acid synthesis. With the use of such novel solvent, various problems caused by the use of toluene are dissolved. This invention is also intended to provide a method of solid-phase nucleic acid synthesis in which protected nucleoside phosphoramidites in which a protective group is bonded to a hydroxyl group at the 5?position or the 3? position of a nucleoside are sequentially bound on a solid phase carrier, where a reaction of removing the protecting group from the protected nucleoside phosphoramidite is carried out in a solution comprising an acid with a pKa of 0.2 to 0.8 and acetonitrile.

Abstract: This invention is intended to discover a novel solvent that can be used as an alternative to toluene in the step of deprotection in the method of solid-phase nucleic acid synthesis. With the use of such novel solvent, various problems caused by the use of toluene are dissolved. This invention is also intended to provide a method of solid-phase nucleic acid synthesis in which protected nucleoside phosphoramidites in which a protective group is bonded to a hydroxyl group at the 5?position or the 3? position of a nucleoside are sequentially bound on a solid phase carrier, where a reaction of removing the protecting group from the protected nucleoside phosphoramidite is carried out in a solution comprising an acid with a pKa of 0.2 to 0.8 and acetonitrile.

Abstract: The invention provides a cut-out method capable of suppressing production of a byproduct, wherein the object RNA oligonucleotide is not cleaved from a universal linker, which is produced in cutting out the object RNA oligonucleotide from the universal support, and capable of increasing the yield of the object RNA oligonucleotide. The RNA oligonucleotide cut-out method includes a step of bringing a universal support supporting an RNA oligonucleotide in contact with an aqueous solution containing alkylamine and a monovalent inorganic salt.

Abstract: The problem of the present invention is to provide a composition for enhancing transdermal absorption of a drug, which shows a sufficiently high enhancing effect on transdermal absorption of a drug, particularly, a composition for enhancing transdermal absorption of a drug, which shows a sufficiently high enhancing effect on transdermal absorption of an acidic drug. A composition for enhancing transdermal absorption of a drug, comprising an unsaturated higher alcohol having 12-20 carbon atoms and a polyvalent alcohol having 3-8 carbon atoms. A composition for enhancing transdermal absorption of a drug, comprising an unsaturated higher alcohol having 12-20 carbon atoms, a polyvalent alcohol having 3-8 carbon atoms and an organic amine having 2-9 carbon atoms.

Abstract: The problem of the present invention is to provide a composition for enhancing transdermal absorption of a drug, which shows a sufficiently high enhancing effect on transdermal absorption of an acidic drug. A composition for enhancing transdermal absorption of an acidic drug, comprising a polyvalent alcohol having 3-8 carbon atoms, a higher alcohol having 12-20 carbon atoms and an organic amine having 2-9 carbon atoms.

Abstract: The invention provides a cut-out method capable of suppressing production of a byproduct, wherein the object RNA oligonucleotide is not cleaved from a universal linker, which is produced in cutting out the object RNA oligonucleotide from the universal support, and capable of increasing the yield of the object RNA oligonucleotide. The RNA oligonucleotide cut-out method includes a step of bringing a universal support supporting an RNA oligonucleotide in contact with an aqueous solution containing alkylamine and a monovalent inorganic salt.

Abstract: The invention provides a method of manufacturing a patch preparation comprising (a) pouring a composition for forming an adhesive layer into a container having a concave part with a shape corresponding to a patch preparation to be manufactured, wherein the composition contains a drug, an adhesive polymer, and an organic solvent; (b) removing the organic solvent from the composition through drying to form a drug-containing adhesive layer in the concave part; and (c) laminating a support on the drug-containing adhesive layer to provide the patch preparation comprising a support and the drug-containing adhesive layer formed on one surface of the support.

Abstract: The present invention relates to a composition for enhancing transdermal absorption of a drug, containing a polyvalent alcohol having 3 to 8 carbon atoms, an organic acid having 2 to 20 carbon atoms, and a higher alcohol having 12 to 20 carbon atoms, and a patch preparation containing a support and a drug-containing adhesive layer containing the composition on one surface of the support.

Abstract: An object of the present invention is to provide a packaging material that is capable of long term storage by preventing adsorption or transfer of an easily oxidizable component and an oily component in an adhesive of a patch to the packaging material, and also preventing discoloration and decrease in drug effect due to oxidization. The present invention provides the packaging material for a patch including: an inner layer made of polyethylene terephthalate having heat sealing properties; an oxygen-absorbing layer that includes an oxygen-absorbing resin having an unsaturated alicyclic structure as an oxygen-absorbing part; and an oxygen barrier layer made of aluminum foil as an outer layer.

Abstract: The problem of the present invention is to provide a composition for enhancing transdermal absorption of a drug, which shows a sufficiently high enhancing effect on transdermal absorption of an acidic drug. A composition for enhancing transdermal absorption of an acidic drug, comprising a polyvalent alcohol having 3-8 carbon atoms, a higher alcohol having 12-20 carbon atoms and an organic amine having 2-9 carbon atoms.

Abstract: The problem of the present invention is to provide a composition which shows a sufficiently high enhancing effect on transdermal absorption of a drug, particularly, a composition which shows a sufficiently high enhancing effect on transdermal absorption of a drug in a patch preparation. A composition for enhancing transdermal absorption of a drug of a patch preparation, containing a higher alcohol having 14-20 carbon atoms and a polyvalent alcohol having 3-8 carbon atoms.

Abstract: The problem of the present invention is to provide a composition for enhancing transdermal absorption of a drug, which shows a sufficiently high enhancing effect on transdermal absorption of a drug, particularly, a composition for enhancing transdermal absorption of a drug, which shows a sufficiently high enhancing effect on transdermal absorption of an acidic drug. A composition for enhancing transdermal absorption of a drug, comprising an unsaturated higher alcohol having 12-20 carbon atoms and a polyvalent alcohol having 3-8 carbon atoms. A composition for enhancing transdermal absorption of a drug, comprising an unsaturated higher alcohol having 12-20 carbon atoms, a polyvalent alcohol having 3-8 carbon atoms and an organic amine having 2-9 carbon atoms.