Linear Formula CD3OD, Molecular Weight 36.07, ≥99.8 atom % D, contains 0.03 % (v/v) TMS, Synonym: Methyl-d3 alcohol d, Tetradeuteromethanol; Methanol-d4 is a deuterated NMR solvent containing 0.03 % (v/v) TMS (trimethylsilane). It is useful in NMR-based research and analyses.