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Updated: May 3, 2026

Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
Published on: June 10, 2021
6-(3,5-Dimethyl-1H-pyrazol-1-yl)-1,2,4,5-tetra-zin-3(2H)-one
Kyrill Yu Suponitsky1, Victor M Chernyshev2, Anna G Mazharova2
1A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova St, 119991 Moscow, Russian Federation.
Abstract:
The title compound, C7H8N6O, represents the keto form and adopts a nearly planar structure (r.m.s. deviation of the non-H atoms = 0.072 Å). In the crystal, mol-ecules form spiral chains along the c axis by N-H⋯N hydrogen bonds. The chains are linked to each other by weak C-H⋯O hydrogen bonds, forming a three-dimensional framework.
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