Trimethylamine oxide dihydrate62637-93-8100 % similar Trimethylamine N-oxide1184-78-775 % similar Tetramethylammonium hydroxide pentahydrate10424-65-435 % similar Tetramethylammonium fluoride tetrahydrate17787-40-535 % similar 4-Methylmorpholine N-oxide monohydrate70187-32-533 % similar