The match function takes in a regex

From your description it looks like you need to match the word DRACHMAN. This we can match using /DRACHMAN/. You also need to match everything after that (.)* Therefore we can finally merge

  initialData = {
    address: "Bla..Bla..Bla..  421 E DRACHMAN  TUCSON AZ 5705-7598  USA"
  };
  data = {
    ...this.initialData,
    address: this.initialData.address.match(/DRACHMAN(.)*/)
  };

Have a look at this fork