Collection: Heterocyclic Building Blocks

Heterocyclic Building Blocks — contains heterocyclic core building blocks, both halogen-substituted and non-substituted, covering ring systems such as pyridine, carbazole, benzoxazole, and benzothiophene. This category serves as a source of aromatic frameworks containing nitrogen, oxygen, or sulfur atoms for assembling more complex molecules.

These heterocyclic building blocks are widely used in cross-coupling reactions such as Suzuki or Buchwald-Hartwig to incorporate heteroaromatic rings into target molecular frameworks, both in medicinal chemistry research and functional materials development. Variations in halogen position on the ring allow regioselectivity in subsequent functionalization steps.

Example products in this collection: TCI A0102 1696-20-4 4-Acetylmorpholine, TCI B5515 132244-31-6 5-Bromobenzoxazole, TCI A0111 1122-62-9 2-Acetylpyridine, TCI B5517 200878-50-8 2-Bromo-7-methoxy-9H-carbazole, TCI A0112 350-03-8 3-Acetylpyridine, TCI B5523 17347-32-9 6-Bromobenzo[b]thiophene, TCI A0113 1122-54-9 4-Acetylpyridine, TCI B5575 83766-88-5 2-tert-Butoxypyridine.

Pay attention to the position and type of halogen on the heterocyclic ring, compound purity, and stability to light or humidity for some sensitive derivatives. All products are genuine Tokyo Chemical Industry (TCI) Japan products, with purity, packaging, and storage conditions listed on each item's page.

Other parallel categories under Building Blocks for Organic Synthesis, often used together in a single laboratory workflow:

• Non-Heterocyclic Building Blocks
• Fluorinated Building Blocks
• Specialized Building Blocks for Drug Discovery

This collection is further divided into 2 more specific groups:

• Non-Halogenated Heterocyclic Building Blocks
• Halogenated Heterocyclic Building Blocks

Return to Building Blocks for Organic Synthesis. For large-volume procurement, special packaging, or specific grades, contact the AMI Scientific team — official distributor of TCI Japan in Indonesia — to check availability and lead time directly from Japan.