4-[5-(dimethylamino)naphthalen-1-yl]-2-methylbut-3-yn-2-ol

3,5-dinitrobenzoic acid,2-methylbut-3-yn-2-ol

2-methylbut-3-yn-2-yl 2,2,2-trifluoroacetate

3-溴-3-甲基-1-丁炔

1c-bromo-3-methyl-buta-1,3-diene