CAS Registry Number

CAS 5390-04-5 — 4-Pentyn-1-ol

4-Pentyn-1-ol is an unsaturated aliphatic alcohol featuring a terminal alkyne group, widely used as a key intermediate in organic synthesis for pharmaceuticals, agrochemicals, and fine chemicals. It serves as a building block for creating complex molecules, including heterocycles and polymers, due to its reactive triple bond and hydroxyl functionality. This chemical has a CAS number of 5390-04-5 and carries no signal word under GHS classification, indicating low acute toxicity. It is typically supplied as a clear liquid with a purity of ≥95% (GC). Molekula supplies 4-Pentyn-1-ol from research to bulk quantities with full documentation and ISO 9001:2015 traceability.