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Methoxytrimethylsilane (MTMS) is a silylating agent, which is majorly used to provide a hydrophobic surface coating with a high water contact angle and low surface energy.
M 4145 (OTTO) Methoxytrimethylsilane, 99% Cas 1825-61-2 - used to quench lab ware with MTMS while handling HF/pyridine.