Heterocyclic Compounds With Nitrogen Hetero-atom[s] Only, Containing An Unfused Pyrazole Ring, Whether Or Not Hydrogenated, In The Structure (excl. Phenazone "antipyrin" And Its Derivatives)
Heterocyclic Compounds With Nitrogen Hetero-atom[s] Only, Containing An Unfused Pyrazole Ring, Whether Or Not Hydrogenated, In The Structure