Building Blocks: Key Facts

Specialty building blocks: Chemical building blocks for medicinal chemistry

Building Blocks

Our non-exclusive chemical Building Block Collection, consisting of over 14,000 products, has been developed to support advanced combinatorial lead generation, hit-to-lead, lead optimization and medicinal chemistry programs. The vast majority of our chemical building blocks are not available from any other commercial source listed in ACD. Our chemical building blocks are available for on-line purchase via

Key Facts:

  • Most products are available from stock in San Diego, CA in 1g and 5g amounts
  • Instant price and availability information and online ordering via
  • Responsive and personalized customer service and technical support from our San Diego Headquarters:
  • All of our chemical building blocks undergo extensive quality control by NMR and LC-MS, and purity is guaranteed to be over 95% by both methods. Upon request, all compounds provided with electronic QC spectra.

Our chemical building blocks are available for on-line purchase via They can be purchased in a broad range of gram amounts from 1 to 100 grams. All non-exclusive building blocks are available from stock; most of them are available for RUSH delivery from our San Diego office in pre-packaged 1 gram and 5 gram amounts.

Click Here to View New Building Blocks

Listed below are some of the most interesting groups in the Building Block Collection, including boronic acids, sulfonyl halides carboxylic acids, primary amines, and secondary amines.

Boronic acids

Carboxylic acids

Primary amines (aliphatic)

Secondary amines (aliphatic)

back to top