The vibrational spectroscopy of novel biliverdin compounds were studied by
Fourier-transform Raman (FT-Raman) and infrared (FT-IR) spectroscopy. The e
ffects of type, length and position of substituents at C(8) and C(12) or C(
1) and C(19) of tetrapyrroles on FT-Raman and FT-IR spectra of these compou
nds, are discussed. The marker bands are developed in order to distinguish
between etiobiliverdin and mesobiliverdin. (C) 2000 Elsevier Science B.V. A
ll rights reserved.