2-Hexadecyl-1,3-dimethyl-2-thiopseudourea hydriodide 5339-45-7 NSC 3522 Pseudourea, 2-hexadecyl-1,3-dimethyl-2-thio-, hydriodide Pseudourea, 2-hexadecyl-1,3-dimethyl-2-thio-, monohydriodide (8CI)