HETEROCYCLIC COMPOUNDS VOLUME IV C/D RODD SSRCCPART C:FIVE-MEMBERED HET COMP WITH TWO HETERO-ATOMS IN THE RINGPART D:FIVE-MEMBERED HET COMP WITH MORE THAN TWO HETERO-ATOMS IN RING
HETEROCYCLIC COMPOUNDS VOLUME IV C/D RODD SSRCCPART C:FIVE-MEMBERED HET COMP WITH TWO HETERO-ATOMS IN THE RINGPART D:FIVE-MEMBERED HET COMP WITH MORE THAN TWO HETERO-ATOMS IN RING