Naik, R. D. published the artcileSynthesis of azo dyes using 2-amino-4,4′-dichlorodiphenyl ether 2′-sulfonic acid and their application on wool, nylon and silk as acid dyes, SDS of cas: 14580-22-4, the publication is Oriental Journal of Chemistry (1997), 13(3), 313-314, database is CAplus.
2-Amino-4,4′-dichloro-2′-sulfodiphenyl ether was diazotized and coupled with pyrazolone derivatives, γ Acid, or H Acid to give azo dyes that were used to dye wool, nylon, and silk. The fastness of the dyes to light and washing was tested.
Oriental Journal of Chemistry 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, SDS of cas: 14580-22-4.
Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics