| 摘要 |
New and useful substituted ethane diphosphonic acids and salts and esters thereof as exemplified by the compound having the formula 2 OXYETHANE-1,1-DIPHOSPHONIC ACID AND PROCESSES FOR PREPARING THE SAME WHICH GENERICALLY COMPRISE THE "DE-OXIRANIZATION" OF AN EPOXY ETHANE DIPHOSPHONATE HAVING THE FORMULA WHEREIN R3 is hydrogen, a metal ion, or an organic radical.
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