P,P'-[(1,2-Phenylene)bis(methylene)]bisphosphonic Acid P,P,P',P'-tetraethyl ester 1g
https://www.manchesterbeacon.org/shop/rw2-trc-p319815-1g-p-p-12-phenylene-bis-methylene-bisphosphonic-acid-p-p-p-p-tetraethyl-ester-1g-278512
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This P,P'-[(1,2-Phenylene)bis(methylene)]bisphosphonic is guaranteed a Acid with the use of P,P,P',P'-tetraethyl and directly supplied ester to your lab by Gentaur's warehouse.
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