Metaxalone impurity manufacturers in usa?

Do you mean certified reference standards for metaxalone impurities (i.e., impurity standards used to develop/validate analytical methods), or something else about impurities that might be produced during manufacturing? If you’re after impurity standards, I can help you locate US suppliers, but I’ll need the exact impurity names or CAS numbers.

Possible US-based sources for metaxalone impurity standards
- Cerilliant (a MilliporeSigma company) — a leading supplier of certified reference standards for pharmaceuticals, including impurity standards. Check their catalog for metaxalone impurities.
- AccuStandard — specializes in pharmaceutical impurity standards and CRMs; often carries impurity sets for many APIs.
- Thermo Fisher Scientific (Fisher Scientific) — offers pharmaceutical reference standards and impurity standards through its CRMs catalog.
- Merck/MilliporeSigma (Sigma-Aldrich) — broad range of analytical standards, including drug impurity references.
- Spectrum Chemical — provides a wide array of impurity standards and CRMs for pharmaceuticals.
- Fisher Scientific (distribution partner) — carries various pharmaceutical impurity standards from multiple vendors.

What I need from you to be more specific
- The exact impurity names you need (e.g., “Metaxalone impurity A,” “N-formyl metaxalone,” etc.), or their CAS numbers.
- Any required purity, lot/COA requirements, and whether you need a single impurity standard or a mixture.
- Whether you also want USP/EP reference standards (official pharmacopeial standards) in addition to generic impurity standards.

If you share the impurity identifiers, I can help you pinpoint exact products, part numbers, and supplier links in the USA.