Turanov, A. N. published the artcileExtraction of Rare Earth Elements(III) with Mixtures of Some New Tridentate Carbamoylmethylphosphine Oxides and 4-Benzoyl-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one from Hydrochloric Acid Solutions, Computed Properties of 4551-69-3, the publication is Russian Journal of General Chemistry (2021), 91(3), 383-388, database is CAplus.
Extraction of rare earths(III) from hydrochloric acid solutions with mixtures of new tridentate carbamoylmethylphosphine oxides Ph2P(O)CH2CON(R)CH2CH2P(O)Ph2 (R = Me, Bu, Oct) and 4-benzoyl-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one in organic solvents has been studied. The observed strong synergistic effect has been attributed to the formation of hydrophobic mixed-ligand rare earth complexes in the organic phase. Stoichiometry of the extractable complexes has been determined, and extraction constants have been calculated The effect of organic solvent and composition of the aqueous phase on the extraction efficiency has been analyzed.
Russian Journal of General Chemistry published new progress about 4551-69-3. 4551-69-3 belongs to pyrazoles-derivatives, auxiliary class Benzenes, name is 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, and the molecular formula is C19H15NO3, Computed Properties of 4551-69-3.
Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics