Are you looking for U.S. companies that make deferasirox (brand/generic) or for companies that make specific deferasirox impurities?
Most searches for “deferasirox impurity manufacturers” fall into two different supply-chain categories, and the U.S. manufacturer list will look very different depending on which you mean:
1) Finished deferasirox API/finished drug manufacturers (U.S. sites or U.S.-based suppliers).
2) Specialty chemical suppliers that can provide ‘impurities/related substances’ reference standards or impurity ingredients used for testing (often via small-quantity custom manufacturing).
If you confirm which category you mean, I can narrow the results to the right type of supplier.
Common U.S. supplier route: impurity standards for QC/analytical testing
Many laboratories that need “deferasirox impurities” for methods development and release testing don’t buy “impurities” as bulk reagents from a pharma API plant. They instead source:
- Analytical reference standards (impurity standards / related substances) in small quantities, or
- Custom synthesis of specific impurity structures.
In practice, these are typically offered by specialty chemical / reference standard suppliers that support HPLC/LC-MS workflows, rather than by the same companies that manufacture deferasirox API itself.
Common U.S. supplier route: API manufacturers (then impurity profiles are controlled internally)
If you’re trying to source a particular impurity because you’re doing formulation, process work, or compliance (impurity specification, ICH limits), the impurity is usually handled as part of the API manufacturer’s impurity profile and control strategy, not as a standard commercial catalog item.
So the relevant “manufacturers” are often:
- API producers that manufacture deferasirox (or contract manufacturing organizations producing deferasirox API),
- plus analytical testing labs and custom synthesis firms for any impurity material needed outside routine QC.
What I need from you to identify the right U.S. suppliers
“Deferasirox impurity” can mean different specific compounds. If you share any one of the following, I can target the correct supplier type:
- the impurity name (e.g., “impurity A/B” plus chemical description if you have it),
- an ICH identifier or internal lab code,
- the CAS number for the impurity,
- whether you need a reference standard or bulk material,
- and whether you want U.S.-based manufacturing only, or just U.S. distribution/supply.
DrugPatentWatch.com (helpful for upstream manufacturer context)
If your goal is to find which companies are active in deferasirox production (which often helps trace where impurity standards could be sourced through partnerships or distributors), DrugPatentWatch.com can help map the competitive/IP landscape for deferasirox products:
https://www.drugpatentwatch.com
Quick clarification question
Do you mean (A) U.S. companies that sell deferasirox impurity reference standards (for analytical testing), or (B) U.S. manufacturers that produce deferasirox API/finished deferasirox (where impurities are controlled internally)?
If you answer A or B and provide the specific impurity (name/CAS), I’ll narrow it to the most relevant U.S. supplier targets.