6,6'-Dibromoindigo

6,6'-Dibromoindigo
Names
	Other names 6BrIG; Tyrian purple
Identifiers
CAS Number	1277170-99-6;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:80914;
ChemSpider	4590500;
KEGG	C17084;
PubChem CID	177057;
UNII	2O3DDL8TAF;
CompTox Dashboard (EPA)	DTXSID801314818 ;
	InChI InChI=1S/C16H8Br2N2O2/c17-7-1-3-9-11(5-7)19-13(15(9)21)14-16(22)10-4-2-8(18)6-12(10)20-14/h1-6,19,21H; Key: UOZOCOQLYQNHII-UHFFFAOYSA-N;
	SMILES C1=CC2=C(C=C1Br)NC(=C2O)C3=NC4=C(C3=O)C=CC(=C4)Br;
Properties
Chemical formula	C16H8Br2N2O2
Molar mass	420.060 g·mol−1
Appearance	purple solid
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

6,6′-Dibromoindigo is an organic compound with the formula (BrC₆H₃C(O)CNH)₂. A deep purple solid, the compound is also known as Tyrian purple, a dye of historic significance. Presently, it is only a curiosity, although the related derivative indigo is of industrial significance. It is produced by snails of the family Muricidae.

The pure compound has semiconductor properties in the thin film phase, which is potentially useful for wearable electronics, and has better performance than the parent indigo in this context.