Wa. Hartgers et al., SEDIMENTARY EVIDENCE FOR A DIAROMATIC CAROTENOID WITH AN UNPRECEDENTED AROMATIC-SUBSTITUTION PATTERN, Journal of the Chemical Society, Chemical Communications, (23), 1993, pp. 1715-1716
A novel diaryl isoprenoid (C40H66), possessing a 3,4,5-/2,3,6-trimethy
l aromatic substitution pattern, which is attributed to a presently un
known strain of photosynthetic green sulfur bacteria, has been identif
ied in a carbonaceous sedimentary rock.