CAS Registry Number

CAS 149-73-5 — Trimethyl orthoformate

Trimethyl orthoformate is an organic ester used as a methylating agent, solvent, and reagent in chemical synthesis, particularly for protecting carbonyl groups and preparing methoxy derivatives. It appears as a colorless liquid with a pungent odor. CAS 149-73-5, molecular formula CH(OCH3)3, molecular weight 106.12 g/mol, stored at ambient conditions. The product carries a **Danger** signal word due to its flammability and toxicity. Molekula supplies Trimethyl orthoformate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.