Lu, Youcai published the artcileExtraction and Separation of Rare Earths from Nitrate Medium by Mixtures of p-Phosphorylated Calixarene and 1-Phenyl-3-methyl-4-benzoyl-pyrazalone-5, Safety of 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, the publication is Chinese Journal of Chemistry (2014), 32(10), 1077-1082, database is CAplus.
The gadolinium extraction by the mixtures of p-phosphorylated calixarene and 1-phenyl-3-methyl-4-benzoyl- pyrazalone-5 from nitrate medium was studied, which indicated an obvious synergistic effect between these two extractants. The extractants exhibit no interaction with each other before the metal extraction Gadolinium(III) was extracted by the species of Ln(PMBP)2L2(NO3) instead of Ln(PMBP)3·(HPMBP) or Ln(NO3)3·2L which are extracted by HPMBP or L alone. Thermodn. functions (ΔG, ΔH, ΔS) were calculated The extraction of other rare earths was also investigated and compared. Possible single rare earth separation was discussed.
Chinese Journal of 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 C17H14N2O2, Safety of 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one.
Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics