Propionyl-L-carnitine hydrochloride

Propionyl-L-carnitine hydrochloride (CAS 119793-66-7) is a propionyl ester of L-carnitine, supplied as its hydrochloride salt and known under the trade names Dromos and ST 261. It carries no assigned E-code and is classified as a pharmaceutical intermediate within the broader carnitine derivative family.

In pharmaceutical formulations, it is used as an active ingredient in preparations targeting peripheral arterial disease and chronic heart failure, where it supports mitochondrial energy metabolism by facilitating acyl group transfer and enhancing acetyl-CoA availability in cardiac and skeletal muscle tissue. It also appears in clinical nutrition products designed for patients with metabolic or cardiovascular conditions.

This material is sourced to pharmaceutical-grade specifications aligned with in-house or customer-defined monographs, as no compendial Ph.Eur. or USP monograph currently exists for this specific ester form. It is subject to REACH registration requirements within the EU and is available under HS code 2923.90.0100, typically in sealed drums or fiber containers suited to GMP supply chains.