Is butalbital a barbiturate

i am 99.9 percent sure it is not an opiate. an opiate is in a class of narcotics derived from thebaine or even coke. Butalbital is a barbiturate which means its pretty much a muscle relaxer, mixed with Tylenol and caffeine it is used for migraines. Opiates are like vicodin,oxycontin,morphine....and so on. lol so to make a long answer short.....no