To be dead honest....it ain't worth the trouble. If you can't go to the store and buy it then don't sweat it. You will do fine without it. It's just a Mainly what it does is boost the B1 vitamin which plants love, but if it's that big of a PITA then don't worry about it.
Thats honestly speaking. If you look around the journals not many use it and they have superb grows.
Also 4oz. would last you a looooong time. you only use about 1/4 tsp. per gallon. It's really potent stuff.