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Chemical Building Blocks

Imagine streamlining your procurement by accessing products from multiple suppliers on a single platform. Explore over 1.5 million in-stock building blocks, featuring our own portfolio alongside trusted partners, on our website.

Find the exact molecule you need in the top search bar by:

  1. Chemical Name
  2. CAS Number
  3. Structure Search

ONE PLATFORM. ONE TRANSACTION.

  • Only validated, in-stock products are offered, ensuring the shortest delivery times with direct shipment from the supplier 
  • Enjoy the convenience of a single supplier with consolidated payment terms and invoices for your entire order.
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Explore our comprehensive collection of chemical building blocks, expertly tailored to meet your diverse needs in chemical synthesis.


Three colorful squares with chemical structures and names on them, placed diagonally from top left to bottom right. The top square is yellow and displays the structure of ‘Furan’ with its five-membered ring including one oxygen atom. The middle square is blue and shows the structure of ‘Thiophene,’ which has a five-membered ring with one sulfur atom. The bottom square is purple and illustrates the structure of ‘Purine,’ a larger, more complex molecule with two rings containing nitrogen atoms.

Organic Building Blocks

Find the basic components needed to drive your research forward in our portfolio of organic building blocks which include Alkanes, Alkenes, Alkynes, Allenes, Arenes, Arsenic Compounds, Baran Functionalized Building Blocks, Baran Hindered Amines, Building Blocks and Chiral Small Molecules from Liverpool ChiroChem, Building Blocks for SuFEx: The Next Click Reaction, Carbenium Salts, and Carbonyl Compounds.

Fluorinated Building Blocks

With a vast offering of fluorinated building blocks, such as, trifluoromethyl, difluoromethyl, triflate, and pentafluorosulfanyl substituents for your toolkit, we make it even easier to discover your target compounds.

Three colorful squares with chemical structures and names on them, floating against a white background. The top square is yellow and displays the chemical structure for 2,2-Difluoroethanamine with its molecular formula. The bottom left square is teal and shows the chemical structure for 2-Bromo-4’-fluorobiphenyl with its molecular formula. The bottom right square is purple and presents the chemical structure for 1,1,1-Trifluoro-2,3-dimethyl-2-butanol with its molecular formula.

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an illustration of a molecule model with a ring structure against a yellow background. The model consists of gray, green, blue, and red spheres connected by white lines representing chemical bonds. In the center, there is a hexagonal ring formed by six gray spheres, with a green sphere attached to one corner and a blue sphere attached to another. Additionally, a red sphere is connected to one of the gray spheres by two white lines, suggesting a double bond.
Halogenated Building Blocks

Halogenated heterocycles are used in a vast array of synthetic protocols, including lithiation and palladium catalyzed cross-coupling methodologies.

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Three colorful squares with chemical structures and names on them, placed diagonally from top left to bottom right. The top square is yellow and displays the structure of ‘Furan’ with its five-membered ring including one oxygen atom. The middle square is blue and shows the structure of ‘Thiophene,’ which has a five-membered ring with one sulfur atom. The bottom square is purple and illustrates the structure of ‘Purine,’ a larger, more complex molecule with two rings containing nitrogen atoms.
Heterocyclic Building Blocks

Our comprehensive portfolio of heterocyclic building blocks is one of the largest and most diverse families of molecular fragments used in organic synthesis.

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