2-Isobutylthiazole for Edible Flavor CAS NO. 18640-74-9 FEMA 3134

2-Isobutylthiazole (CAS No. 18640-74-9) is a well-recognized heterocyclic aromatic compound belonging to the thiazole family. It is widely utilized in the flavor and fragrance industry for its characteristic green, vegetable-like aroma with distinct nuances of fresh tomato vine, earthy green pepper, and subtle nutty undertones. This compound is also known under its FEMA number 3134, which confirms its acceptance as a safe flavoring substance for use in food applications within regulated limits.

With the molecular formula C₇H₁₁NS and a molecular weight of 141.23 g/mol, 2-isobutylthiazole exists as a colorless to pale yellow liquid at room temperature. It exhibits excellent solubility in organic solvents such as ethanol and oils, making it highly suitable for incorporation into complex flavor formulations. Its olfactory profile is particularly valued in savory applications, including snack seasonings, soups, sauces, and plant-based meat alternatives, where it contributes to a natural “garden-fresh” character. Additionally, it serves as an effective modifier in fruit flavors, adding depth and authenticity to tomato, passion fruit, and tropical blends.

Beyond its role in flavor creation, 2-isobutylthiazole is also employed as an intermediate in the synthesis of more complex aroma molecules and pharmaceutical building blocks. Its stability under moderate processing conditions and compatibility with other aroma ingredients make it a versatile tool for flavorists and chemists alike.

For industrial applications, this product is typically supplied in amber glass bottles or aluminum containers to preserve its purity and organoleptic properties. Compliance with international quality standards ensures consistent performance across batches. As with all aroma chemicals, proper handling and storage are essential to maintain product integrity.