Allopurinol Nitrile Impurity (CAS No: 16617-46-2) or 3-amino-1H-pyrazole-4-carbonitrile is used in the Synthesis of pyrazolo[1,5-a]pyrimidine ring that can be used as a possible bioisosteric replacement of the 5-(1H-pyrrol-1-yl)pyrazole scaffold.
References
Mugnaini, Claudia, et al. “Synthesis of Pyrazolo[1, 5-a]Pyrimidine Ring as a Possible Bioisosteric Replacement of the 5-(1H-Pyrrol-1-Yl)Pyrazole Scaffold.â€Â Arkivoc, edited by Willem Arjen Lodewijk van Otterlo, vol. 2022, no. 2, Oct. 2021, https://doi.org/10.24820/ark.5550190.p011.628.
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