There is no compound with the name "ammonium hyposulfite."

Here's why:

* Hyposulfite is an outdated name for thiosulfate, which has the formula S₂O₃²⁻.

* Ammonium is the cation NH₄⁺.

Therefore, the correct formula for the compound containing ammonium and thiosulfate is (NH₄)₂S₂O₃, which is called ammonium thiosulfate.