CAS Registry Number

CAS 123-62-6 — Propionic anhydride

Propionic anhydride is an organic compound primarily used as a reagent in organic synthesis, particularly for acylation reactions, and as an intermediate in the production of pharmaceuticals, agrochemicals, and flavorings. It serves as a propionylating agent and is also employed in the manufacture of plasticizers and perfumes. Propionic anhydride has a CAS number of 123-62-6 and carries no signal word under GHS classification, indicating it is not classified as hazardous under standard criteria. It is a colorless to pale yellow liquid with a pungent odor, typically stored under inert gas to prevent hydrolysis. Molekula supplies Propionic anhydride from research to bulk quantities with full documentation and ISO 9001:2015 traceability.