Csaszar, J. published the artcileOn the spectra of some acceptor-type polynitro derivatives of biphenyl, biphenylmethane and biphenylamine, COA of Formula: C12H9N3O4, the publication is Acta Physica et Chemica (1987), 33(1-4), 11-21, database is CAplus.
The UV and visible spectra of nitro and polynitro derivatives of diphenylamine were investigated and the substituent effects were interpreted in comparison with the corresponding biphenyl and diphenylmethane derivatives
Acta Physica et Chemica published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, COA of Formula: C12H9N3O4.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia