The invention provides a preparation method of
salbutamol sulfate, a
salbutamol sulfate injection and a preparation method, and belongs to the technical field of
medicine preparation.The preparation method of the
salbutamol sulfate comprises the steps that salbutamol is taken and acidified in a
mixed solution of ethyl
alcohol and
diethyl ether, and the
salbutamol sulfate is prepared; the preparation method of the
salbutamol sulfate injection comprises the following steps: under the protection of
nitrogen, taking water for injection, adding
sodium chloride for dissolving, then adding
citric acid monohydrate and
sodium citrate dihydrate for dissolving, cooling, then adding
salbutamol sulfate for dissolving, fixing the volume, filtering, filling, melting and sealing, and sterilizing to obtain the salbutamol sulfate injection. According to the preparation method of the salbutamol sulfate, the yield and the purity of the salbutamol sulfate can be effectively improved; in addition, by adding a specific amount of
citric acid and
sodium citrate, the formula can be simplified, and the dosage and variety of auxiliary materials are reduced, so that the adverse reaction is reduced, and the safety is improved.