CAS Registry Number

CAS 762-42-5 — Dimethyl acetylenedicarboxylate

Dimethyl acetylenedicarboxylate (DMAD) is a highly reactive acetylenic ester used as a key reagent in organic synthesis, particularly for Diels-Alder reactions, cycloadditions, and the preparation of complex organic molecules. It serves as a versatile building block in pharmaceutical, agrochemical, and polymer research. CAS 762-42-5, molecular formula CH3OCOC≡CCO2CH3, molecular weight 142.11 g/mol. Store at ambient temperature. Signal word: Danger. Molekula supplies Dimethyl acetylenedicarboxylate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.