Creating a Master Company Sheet for Efficient Data Management

Hey has anyone created a master company sheet that they reference to make sure that they don't enrich data on companies that they have already contacted? I am working with a client and we are reaching out to Shopify stores based on what they sell. The thing is we don't reach out to the stores again if they sell multiple things that we are looking for. I would like to filter out all the past searches with a master table. Any advice would be great.