pyrazole

About 0.03 uses per million words.

Meaning

1. noun A heterocyclic organic compound containing two nitrogen atoms next to each others in a five-membered ring, called 1,2-diazole in IUPAC nomenclature.
2. noun Any of a group of compounds containing that structure.

Similar words

methyl pyrazoline pyrazine pyrazolidine diazole imidazole pyridazine pyrazinone pyrazin pyrazolone

Often followed by

and ring derivatives compounds imidazole on in derivative