Wiley SpectraBase; SpectraBase Compound ID=4nJlRIGDZKi
http://spectrabase.com/compound/4nJlRIGDZKi (accessed Oct 24, 2020).

POLY[PIPERAZINYLENE(1,4)AMER-ALT-QUADRATYL(1,3)AMER]; POLYAMIDE FROM 1,3-QUADRATIC ACID AND PIPERAZINE; POLY(SQUARYLAMIDE), CYCLOALIPHATIC
SpectraBase Compound ID 4nJlRIGDZKi
Molecular Formula C8H4N2O2
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Source of Sample G. Manecke, Fritz Haber Institute, Berlin-Dahlem, Germany
Source of Spectrum SADTLER (SAMPLE AND PROPERTIES PROVIDED BY PROFESSOR DOCTOR DIETER O. HUMMEL)
Technique KBr WAFER