CFR > Title 31 - Money and Finance: Treasury > SUBTITLE B—Regulations Relating to Money and Finance > CHAPTER V—OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY (parts 501 to 598) > PART 598—FOREIGN NARCOTICS KINGPIN SANCTIONS REGULATIONS > SUBPART C—General Definitions (§598.301 to §598.319) > 598.307—Interest.