Extended Data Fig. 10: The absorption spectra of the dihalogenated indigos in DMSO:H2O = 50:50 % (v/v) solution.
From: Production of Tyrian purple indigoid dye from tryptophan in Escherichia coli
The absorption maxima are as follows: 5,5’-Dichloroindigo (55CL), 645 nm; 5,5’-dibromoindigo (55BR), 623 nm; 6,6’-dichloroindigo (66CL), 527 nm; 6,6’-dibromoindigo (66BR), 520 nm; 7,7’-dichloroindigo (77CL), 600 nm; and 7,7’-dibromoindigo (77BR), 570 nm.
