Liquid Tetrahydrothiophen-3-One 1003-04-9 is available. As 4,5-Dihydro-3(2H)-Thiophenone, it is known. It is used in the fragrance, flavour, fragrance and aroma industries as well as the chemical, pharmaceutical and soap and detergent industries. Container should be stored with the lid snugly closed in a dry, well-ventilated area. Opened containers need to be properly resealed and maintained upright to avoid leaks. Save in a cool location.