I just bought a pound of IMR 4227 ... actually your old H4227. The canister I just purchased is labeled made in Australia.
QuickLoad say IMR4227 and H4227 are pretty darn close. Six of one/half dozen of the other. See also:
By any chance does it have an ADI identifier/equivalent # on it?
But as for replacing V-N110 for what you've been using it for...
I'd bite the bullet and re-purchase the N110. That stuff's magic