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CAS 121-43-7 — Trimethyl borate

Trimethyl borate (CAS 121-43-7) is a colorless, flammable liquid ester used primarily as a boron source in organic synthesis, flame retardants, and as a precursor for boric acid and boron compounds. It has a molecular formula of C3H9BO3 and a molecular weight of 103.9128 g/mol. Stored at ambient conditions, it carries no signal word for hazard classification. Molekula supplies trimethyl borate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.