Catalogue Building Blocks
Privileged building blocks held in the general catalogue, including compounds announced as kilogram stock.
5 compounds in this group
Why these are grouped together
These compounds sit in the general catalogue rather than under the API or intermediate headings. They are the privileged building blocks — small, functionalised fragments that get used across many programmes — and they include the compounds WesynTech has announced as kilogram-scale stock.
- Screening-stage quantities without a custom synthesis project attached.
- Structures chosen for their handles: halides, boronates, protected amines, esters.
- Anything in the 672-compound catalogue can be quoted the same way.
Compounds in this group
Not here? Search the full 672-compound catalogue or ask about custom synthesis.
Questions buyers ask about this group
How many catalogue building blocks does WesynTech list?
5 compounds in this group have a detail page on this site, drawn from the company's own product centre. The wider catalogue holds 672 compounds in total.
Can catalogue building blocks be supplied at production scale?
In-house capability runs from gram to hundred-kilogram scale for every compound listed under Catalogue Building Blocks. Larger industrial volumes are produced through long-term partnerships with several chemical plants, using the route already developed rather than a new one.
What if the compound I need is close to one of these but not identical?
Send the structure rather than the nearest catalogue building block on the list. Custom synthesis for early-stage R&D projects is one of WesynTech's three core services, and a near-miss on a catalogue is the usual reason people start one.
Get this group quoted
List the CAS numbers and quantities you need. One e-mail reaches the chemists, not a call centre.