C07J21/001 - CPC Classification Index

ClassID:

96527 ⎘

C07J21/001 - CPC Classification

Classification description:

Normal steroids containing carbon, hydrogen, halogen or oxygen having an oxygen-containing hetero ring spiro-condensed with the cyclopenta(a)hydrophenanthrene skeleton Lactones

Sub-classes:

C07J21/003 » {at position 17} 21