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:
- Chemical Name
- CAS Number
- 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.
- We act as the Importer of Record (IOR), all customs and import requirements are taken care of for a seamless purchasing experience.
Explore our comprehensive collection of chemical building blocks, expertly tailored to meet your diverse needs in chemical synthesis.
![Heterocyclic Building Blocks 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.](/deepweb/assets/sigmaaldrich/marketing/global/images/categories/building-blocks/Organic-Building-Blocks/Organic-Building-Blocks.jpg)
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.
![Fluorine element from the periodic table 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.](/deepweb/assets/sigmaaldrich/marketing/global/images/categories/building-blocks/fluorinated-building-blocks/fluorinated-building-blocks.jpg)
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Halogenated heterocycles are used in a vast array of synthetic protocols, including lithiation and palladium catalyzed cross-coupling methodologies.
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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