Windex Glass Cleaner is advertised as a special formula with exclusive "Ammonia-D". I thought ammonia is NH3, no left-hand or right-hand version to deserve a Nobel Prize. The only thing I can think of is ND3 (deuterium substitutes hydrogen), but it is unlikely that cheap Windex contains such an expensive isotope.
So, what exactly is "Ammonia-D"? Are there "Ammonia-A", "Ammonia-B", "Ammonia-C", etc.? TIA.
