1,3-dimercaptopropane1,3-PropanedithiolTrimethylene dimercaptan1,3-二巯基丙烷1,3-Propanedithiol1,3-丙基二硫醇1,3-丙二硫醇Trimethylene mercaptanpropane-1,3-dithioltrimethylene dimercaptan1,3-dimercaptopropanetrimethylenedithioglycoltrimethylenedithiol1,3-PROPANEDITHIOLdithiotrimethyleneglycol1,3-propanedimercaptan