1,3-DIMERCAPTOPROPANE 1,3-Propanedimercaptan 1,3-Propanedithiol 109-80-8 4-01-00-02503 (Beilstein Handbook Reference) BRN 1071197 Dithiotrimethyleneglycol EINECS 203-706-9 FEMA No. 3588 NDR-132 Trimethylene dimercaptan Trimethylenedithioglycol Trimethylenedithiol