1-Propynylmagnesium bromide16466-97-0100 % similar Isopropenylmagnesium bromide13291-18-443 % similar Ethynylmagnesium bromide4301-14-835 % similar Bromo(1-methylethyl)magnesium920-39-835 % similar Ethylmagnesium bromide925-90-635 % similar Methylmagnesium bromide75-16-133 % similar Propylmagnesium bromide927-77-530 % similar