C07J71/0073 - CPC Classification

Steroids in which the cyclopenta(a)hydrophenanthrene skeleton is condensed with a heterocyclic ring Sulfur-containing hetero ring

• C07J71/0078 » {containing only sulfur} 1
• C07J71/0089 » {containing sulfur and oxygen} 1
• C07J71/0094 » {containing sulfur and nitrogen} 5