The phrase "although desirable" is correct and usable in written English.
It can be used to introduce a contrasting idea or condition that is considered favorable but may not be achievable or relevant in the current context.
Example: "The new policy is, although desirable, not feasible given our current budget constraints."
Alternatives: "even though preferred" or "while beneficial".
There was no central reserve, because, although desirable for emergencies, it might prove dangerous in peacetime.
But £50 a year off your energy bills, although desirable, is not a recipe for a socialist utopia.
In the world I grew up in, when mental illness among young people was largely unheard of, achievement, although desirable, was not considered particularly important.
Although desirable, this "win-win" policy objective can be contradictory at the local level.
However, providing analytical models, although desirable, is mostly impossible, in particular for complex geometries.
It was not realistic, although desirable, to conduct new human studies on several products in a short period.
His point is that unless Americans really do believe that nuclear war is survivable, and survivable under conditions that, although hardly desirable, are acceptable and manageable, then deterrence has no meaning.
Although highly desirable, functional restoration of diseased and damaged human articular cartilage continues to remain one of the most challenging orthopaedic problems.
Although a desirable end-goal, the feasibility of global political change towards a world government in the form of a global federal system, according to Reinhold Niebuhr, would depend on deeper global social integration and cohesion than was evident in the mid-twentieth century (Scheuerman 2011, 73).
Although highly desirable, availability of a comprehensive accurate database, hence may be quite a while away.
However, although seemingly desirable, a randomised controlled trial over time would be ethically questionable and very difficult to perform.
