power 5,7, king, sun, magic, are all n-butane. C4H10 and isobutane is CH3CH(CH3)2. You see I have an issue spending $10 for a can of butane, but I get the 2.75 oz cans of ronson for $3.00 out the door. It would cost $9 for 3 cans which costs the same as vector, but its just a mental issue I...