CPC Class Codes
A61K 31/443
containing a five-membered ...
A61P 1/16
for liver or gallbladder di...
C07C 233/87
of a carbon skeleton contai...
C07C 255/60
at least one of the singly-...
C07C 2602/08
the other ring being five-m...
C07D 207/335
Radicals substituted by nit...
C07D 307/52
Radicals substituted by nit...
C07D 307/68
Carbon atoms having three b...
C07D 307/82
with hetero atoms or with c...
C07D 405/12
linked by a chain containin...
C07D 405/14
containing three or more he...
C07D 407/12
linked by a chain containin...
C07D 409/12
linked by a chain containin...
C07D 413/12
linked by a chain containin...
C07D 417/12
linked by a chain containin...
C07D 471/04
Ortho-condensed systems
C07D 487/04
Ortho-condensed systems