24-isopropyl cholestane is an organic molecule produced by specific sponges, protists and marine algae. The identification of this molecule at high abundances...

from the early Silurian. A chemical tracer is 24-isopropylcholestane, which is a stable derivative of 24-isopropylcholesterol, which is said to be produced...

Evidence of animals is found as long ago as the Cryogenian period. 24-Isopropylcholestane (24-ipc) has been found in rocks from roughly 650 million years ago;...

to: Baccharane Cucurbitane Dammarane Dinosterane Euphane 24-Isopropylcholestane Lanostane 24-n-Propylcholestane Protostane Tirucallane This set index...