Active Pharmaceutical Ingredients
Named research APIs and clinical-stage actives supplied for reference, analytical and development work.
15 compounds in this group
Why these are grouped together
The compounds in this group are named actives — tool compounds, clinical candidates and reference actives that programmes need in identified, documented form rather than as anonymous bulk chemistry. Most arrive with a literature code attached (APD 668, PF-573228, FGF 401), which is how medicinal chemists ask for them and how WesynTech lists them.
- Identity anchored on CAS number, not on a trade description.
- Supplied at the scale the study needs, from research quantities upward.
- The same chemists who make the compound answer the technical questions about it.
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 apis does WesynTech list?
15 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 apis be supplied at production scale?
In-house capability runs from gram to hundred-kilogram scale for every compound listed under Active Pharmaceutical Ingredients. 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 api 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.