Isoquinoline

Isoquinoline (CAS 119-65-3, EC 204-341-8, C9H7N) is a bicyclic nitrogen-containing aromatic compound, also known commercially as Leucoline and beta-Quinoline, and registered under FEMA 2978 and NSC 3395. It carries no assigned E-code. It is classified under HS code 29334900 within the heterocyclic compounds category.

In food and flavor applications, isoquinoline functions as a flavorant by contributing characteristic quinoline-type aromatic notes at controlled concentrations. In personal care formulations, it acts as an antimicrobial preservative and skin conditioner, disrupting microbial membrane integrity while supporting barrier function. Its antioxidant activity also makes it relevant as a stabilizer in complex formulations.

Isoquinoline is supplied as a low-melting solid conforming to REACH registration requirements for the European market. Procurement is available in technical and flavor-grade specifications, with FCC compliance applicable for food-use batches. Standard packaging formats include drum and smaller quantities for laboratory or pilot-scale sourcing.