Lugovkin, B. P. published the artcileSynthesis of 3-indolyl(1-aryl-3-methylpyrazol-5-on-4-yl)methanephosphonates, Formula: C10H9ClN2O, the publication is Zhurnal Obshchei Khimii (1973), 43(6), 1261-3, database is CAplus.
Indole-3-carboxaldehyde reacted with 1-aryl-3-methyl-5-pyrazolones to form the 4-indoleninylpyrazolone analogs which with (RO)2PHO in the presence of RONa catalyst gave title compounds I (Ar = Ph, p-tolyl, o-, p-ClC6H4; (R = Me, Et).
Zhurnal Obshchei Khimii published new progress about 14580-22-4. 14580-22-4 belongs to pyrazoles-derivatives, auxiliary class Organic Pigment, name is 1-(2-Chlorophenyl)-3-methyl-5-pyrazolone, and the molecular formula is C10H9ClN2O, Formula: C10H9ClN2O.
Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics