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Pharmaceutical Intermediates

Organic Building Blocks

Functionalised aliphatic and aromatic building blocks, from aldehydes and amines to boronic acids and fluorinated aromatics, for synthesis and discovery.
8,529 products19 sub-categories337 in stockCOA + SDS with every lot
8,529 products · page 1 of 356
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(-)-Acorenone
CAS
5956-05-8
Formula
C15H24O
MW
220.35 g/mol
ZX-041630
(-)-Altenuene
CAS
889101-41-1
Formula
C15H16O6
MW
292.28 g/mol
ZX-043450
(-)-Linalool
CAS
126-91-0
Formula
C10H18O
MW
154.25 g/mol
ZX-043128

Organic Building Blocks is organised by functional group, so a chemist can find the reactive handle they need quickly. It spans carbonyl compounds, acids and esters, amines and amides, acid chlorides, nitriles, nitro compounds, alcohols, phenols, ethers and epoxides, halogenated and fluorinated aromatics, sulphur compounds, boronic acids, silanes, hydrocarbons and chiral synthons. Typical members include 1,3-Cyclohexanedione, 2,4,6-Trichlorobenzoyl chloride, (R)-(−)-Epichlorohydrine and 1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester.

For discovery work, fast access to small packs and reliable identity matter most. For scale-up, consistency and impurity profile take over. Each listing states purity and key identifiers, and many items are available from grams to kilograms. Check reactivity and storage notes for acid chlorides, epoxides and boronic acids, which are moisture sensitive.

Every lot ships with a COA and SDS. If you are building a compound library, paste your CAS list into the Bulk CAS lookup to see what we hold in one step.

Organic Building Blocks: questions buyers ask

How should moisture-sensitive building blocks be stored?
Keep acid chlorides, anhydrides, boronic esters and silanes tightly sealed under dry nitrogen or argon, and store them cool. Allow cold bottles to warm before opening to avoid condensation. Reseal promptly, and check purity of older stock before use, as hydrolysis products can affect stoichiometry and yields.
Can I order a set of building blocks for a library?
Yes. Many customers send a list of compounds with quantities and we quote them together. Paste the CAS numbers into the Bulk CAS lookup or add items to the quote panel. We confirm availability, pack sizes and lead time for each line, and ship them in one consignment where possible.
What purity is typical for research building blocks?
Most research building blocks are 95% to 98% pure, which suits early synthesis where the product is purified afterwards. Higher grades are available for some items. If an impurity could interfere with your chemistry, such as a regioisomer or a hydrolysis product, ask for the COA before ordering.

Have a list of compounds to price?

Paste up to 200 CAS numbers into Bulk CAS lookup, or send one enquiry for everything in your quote list. We reply with price, lead time and documents.

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