In contrast, the pregnenolone sulfateester level was low and did not significantly change among the developmental stages.
2
These results taken together suggest that the amphibian brain possesses steroidogenic enzyme P450scc and produces pregnenolone and its sulfateester.
3
In the present study, seasonal changes in pregnenolone and its sulfateester were further examined as a possible physiological change using R. nigromaculata.
4
In humans, dopamine mostly exists in two isomeric forms of sulfateester conjugates as metabolites; i.e., dopamine-3-O-sulfate and dopamine-4-O-sulfate in the circulation.
5
Partial structures of anionic components, composed primarily of sulfateesters, were obtained with CID.