3-bromo-2-iodo-5-methylthiophene

3-bromo-5-methyl-2-prop-1-ynylthiophene

3-bromo-5-methyl-2-(2-phenylethynyl)thiophene

3-bromo-2-(3,3-dimethylbut-1-ynyl)-5-methylthiophene

2-(3-bromo-5-methylthiophen-2-yl)ethynyl-trimethylsilane