C. Armanios et al., THE MOLECULAR-STRUCTURE OF SEDIMENTARY (22R) 17-ALPHA,21-BETA(H)-HOMOHOPANE FROM AN X-RAY-DIFFRACTION STUDY, Geochimica et cosmochimica acta, 58(13), 1994, pp. 2941-2943
A major hopanoid component of a Victorian brown coal has been isolated
and shown to be (22R) 17alpha,21beta(H)-homohopane by a single crysta
l X-ray diffraction study. When analysed using capillary GC-MS techniq
ues this compound had the same retention time as the later eluting 17a
lpha,21beta(H)-homohopane from crude oil.