Pyrazoline
[pi-raz-uh-leen, -lin, pahy-] /pɪˈræz əˌlin, -lɪn, paɪ-/
noun, Chemistry.
1.
any of the group of heterocyclic compounds containing three carbon atoms, two adjacent nitrogen atoms, and one double bond in the ring.
2.
the parent compound, C 3 H 6 N 2 .
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