CAS Registry Number

CAS 78-27-3 — 1-Ethynyl-1-cyclohexanol

1-Ethynyl-1-cyclohexanol is an organic compound featuring a terminal alkyne and hydroxyl group, widely used as a key intermediate in the synthesis of pharmaceuticals, vitamins (like vitamin A and E), and fine chemicals. Its unique structure enables efficient cyclization and coupling reactions, making it essential in organic synthesis pathways. This chemical has a CAS number of 78-27-3, a molecular formula of C8H12O, and a molecular weight of 124.18 g/mol. It is a white to off-white crystalline solid with a melting point of 82–86°C and is soluble in organic solvents. No signal word is assigned under GHS classification, indicating low acute toxicity, though proper handling is advised. Molekula supplies 1-Ethynyl-1-cyclohexanol from research to bulk quantities with full documentation and ISO 9001:2015 traceability.