Question

Why steroid named as cyclopentanoperhydrophenanthrene

Answer 1

Steroids are named as cyclopentanoperhydrophenanthrene because they have a molecular structure consisting of four fused cycloalkane rings (cyclopentane and cyclohexane) and one phenanthrene ring. This structure is commonly referred to as the cyclopentanoperhydrophenanthrene backbone, which is the characteristic feature of steroid molecules.