4-Pentyne-1-thiol

[77213-88-8] C5H8S (MW 100.18) InChI = 1S/C5H8S/c1-2-3-4-5-6/h1,6H,3-5H2 InChIKey = ZKNNFPMQXFHRCN-UHFFFAOYSA-N (reagent for the synthesis of various pentynylic sulfur compounds) Physical Data: colorless liquid; bp 41 °C at 15 torr.1 Solubility: sol alcohol, ether, and most organic solvents. Form supplied in: not commercially available. Purification: the crude thiol resulting from fresh deprotection of the S-pentynyl thiolacetate progenitor usually requires no purification and is highly satisfactory for most purposes. In special cases, purification can be achieved by careful distillation at 15–18 torr with the condenser kept below 0 °C. Handling, Storage, and Precautions: this acetylenic thiol has a tendency to undergo oxidation/polymerization on exposure to air at room temperature, but it remains essentially unchanged when stored in a freezer at −20 °C, especially in the absence of air. The thiol is a malodorous compound and should be used in a well-ventilated fume hood. Incompatible with strong acids, strong bases, and oxidizing agents.