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12
votes
2answers
361 views

What does “gamma” in gamma-oryzanol mean?

The structure of gamma-oryzanol is: What does the "gamma" in its name mean?
3
votes
2answers
89 views

Steroid nomenclature: β-sitosterol

Can someone tell me why β-sitosterol has the beta prefix? What is it denoting? When comparing its structure to other similar phytosterols I see no need for it.
6
votes
1answer
893 views

Numbering cholesterol structure

What could be the reason for clockwise numbering in c ring of cholesterol?
2
votes
1answer
266 views

Confusion about Ethinyl estradiol IUPAC name

According to Wikipedia, the IUPAC name of ethinyl estradiol is: 17α-Ethynylestra-1,3,5(10)-triene-3,17β-diol However, in PubChem, its IUPAC name is: (8R,9S,13S,14S,17R)-17-ethynyl-13- methyl-...