<unk> , also known as etidronate, is a bisphosphonate used as a medication, detergent, water treatment, and cosmetic. It was patented in 1966 and approved for medical use in 1977.
Etidronic acid
Pamidronic acid
Risedronic acid
Medronic acid
Alendronic acid
Ibandronic acid
Zoledronic acid
Allopurinol