trimethylamine
noun
tri·meth·yl·amine
ˌtrī-ˌmeth-ᵊl-ˈam-ˌēn, -ə-ˈmēn 
: an irritating gaseous or volatile liquid tertiary amine (CH3)3N that has a fishy odor, is only slightly more basic than ammonia, is flammable and forms explosive mixtures with air, is formed as a degradation product of many nitrogenous animal and plant substances, and is used chiefly in making quaternary ammonium compounds (as choline)
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“Trimethylamine.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/trimethylamine. Accessed 25 May. 2025.
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