Abstract: Disclosed are a method for the synthesis of roxadustat and an intermediate thereof, and an intermediate thereof. In particular, disclosed is a method for the synthesis of compound M1, the method comprising the following steps: carrying out a reaction as shown below between compound SM and compound SM-A under the action of an oxidizing agent. The method of the present invention uses cheap and easily available raw materials, has short reaction steps, produces a high yield, has simple and convenient post-treatment procedures, and is suitable for industrial production.

Abstract: This invention relates to a prefabricated insulated wall panel system with a resizable structure that can readily meet the on-site substrate dimensional tolerance by enabling the panel connectors to be cut, tailored on-site, and inserted and patched without damaging the watertightness structure as well as the continuous insulation structure of the exterior cladding system.