The part of the sentence 'of outstanding interest' is correct and usable in written English.
You can use it to describe something that is particularly interesting or noteworthy. For example, "The mysterious disappearance of the author's manuscripts is of outstanding interest to historians."
His car was of outstanding interest to the Barstows.
Later on, the two men went on a tour of inspection together, and Pope showed him points of outstanding interest.
Anthony assessed buildings of outstanding interest for grants, and later aided major ensembles of buildings in Bath and King's Lynn.
All these factors combined to provide the dramatist with an opportunity to create a varied and exploratory new drama of outstanding interest.
The collection remains of outstanding interest to philologists as evidence of the English language at a crucial period in its development.
Epiphytic lichens are widely used to indicate old undisturbed forest stands with a long forest history that are of outstanding interest for biodiversity conservation.
Yet the notional value of outstanding interest-rate swaps is $685 billion, or 37% of GDP.
The $400 million remained unresolved, but U.S. officials say a ruling was expected that would have resulted in the return of the $400 million plus billions of dollars in outstanding interest.
Since the number of possible outstanding interests in a given piece of property is more limited in the civil law than it is in Anglo-American, it is less necessary to have a trustee who can give good title to the whole of the property.
The bonds were governed by New York law, and the fund has since pursued the country for the payment of all principal plus outstanding interest in US courts.
Left unchecked, it wouldn't take much more than a year before that extra $20 had spiralled into outstanding interest of almost $1,000, and if you don't pay up, well… you might just get the clamps.
