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| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 3755-10g | 10 g | please inquire  Request |
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Oxabiphor (Oxabifor) acid is a chelator for the lanthanide tetraphosphonate complexes synthesis. Oxabiphor (oxa-bis-ethylenenitrile tetra(methylene phosphonic acid); oxybis(ethylene)bis(nitrilobismethylene)tetrakisphosphonic acid) is useful for the radionuclides delivery due to complexation properties [1].
Supplied as a dihydrate and meets the quality requirements:
| Quality criteria (method) | Reference value |
|---|---|
| Authenticity (1H NMR) | meets the requirements |
| Key product content (1H NMR) | not less than 98 % |
| Acceptable impurity (1H NMR) | 2-(2-Aminoethoxy)ethylamine – no more than 0.3 % |
| Residual solvents class 1,2 (1H NMR) | visual absence of signals in the spectrum (less than 0.1 %) |
| Authenticity (31P NMR) | meets the requirements |
| Acceptable impurity (31P NMR) | Trisphosphonates – no more than 1.0 % |
| Acceptable impurity (31P NMR) | Hydroxymethylphosphonic acid – no more than 0.5 % |
| Chloride ion content (Reverse precipitation titration) | no more than 0.2 % |
| Chemical impurities (Atomic emission spectroscopy) | no more than (ug/g): As – 50; Ba – 5; Be – 0,25; Bi – 5; Cd – 50; Cr – 7; Cu – 2,5; Fe – 15; Hg – 125; Mn – 0,5; Mo – 5; Ni – 5; Pb – 5; Sn – 5; Sb – 50; Te – 50; Zn – 125; Al – 50 |
[1] Maruk A. et al. Synthesis, Complexation Properties, and Evaluation of New Aminodiphosphonic Acids as Vector Molecules for 68Ga Radiopharmaceuticals. Molecules. 2021. 26(8):2357. doi:10.3390/molecules26082357
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