Isoquinoline

Isoquinoline (CAS 119-65-3), also known commercially as leucoline, is a bicyclic nitrogen-containing aromatic compound sourced primarily from coal tar fractions.

Where is Isoquinoline used?

• Flavoring: FEMA 2978 flavoring agent and fragrance intermediate
• Flavor formulation: coal tar and quinoline-like nuances at trace levels in complex systems
• Savory and roasted profiles for food products
• Fragrance: building block for complex aroma compounds in oriental and tobacco-type compositions
• Personal care: evaluated for preservation-enhancing properties in multi-functional formulations
• Food-grade applications are governed by FEMA status.

Good to know: High-purity grades are required for flavor and fragrance end uses to ensure consistent sensory profiles. Documentation of permitted use is a standard procurement requirement for industrial food manufacturing and safety compliance.

Commercial specifications

• Purities from technical to high-purity levels of 98% or higher
• Packaging from small laboratory quantities up to drum-scale volumes