3d image of phytane skeletal formula

phytane isoprenoid alkane phytol tetramethylhexadecane chlorophyll yield pristane petroleum depositional redox proxies source rock oil spills compound non-polar organic structural isomer crocetane gas chromatography stereoisomer stereo carbon methanogenic halophilic archaea archaeol unsaturated tocopherol phylloquinone geranylgeranyl substituent photosynthetic pigment plants algae cyanobacteria tetrapyrrole biosphere archaeal ether lipids archaeols diphytanyl glyceryl ethers tocopherols biomolecule biomarker diagenesis pristane/phytane ratio pr/ph biodegraded biodegradation carbon isotopes 3d