pyrazolopyrimidine pyrazolopyrimidine pyrazolopyrimidines are a series of isomeric heterocyclic chemical compounds with the molecular formula c6h5n3. they form the central core of a variety of more complex chemical compounds including some pharmaceuticals and pesticides. pyrazolopyrimidine names preferred iupac name pyrazolopyrimidine identifiers cas number 274-71-5 y 3d model (jsmol) interactive image chemspider 9811537 echa infocard 100.227.461 pubchem cid 11636795 unii nx2kr7m4a4 y comptox dashboard (epa) dtxsid70469781 inchi inchi=1s/c6h5n3/c1-3-7-6-2-4-8-9(6)5-1/h1-5hkey: ldijkubtlztfrg-uhfffaoysa-ninchi=1/c6h5n3/c1-3-7-6-2-4-8-9(6)5-1/h1-5hkey: ldijkubtlztfrg-uhfffaoyal smiles n1cccn2nccc12 properties chemical formula c6h5n3 molar mass 119.127 g·mol−1 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). infobox references pharmaceuticals one isomer of pyrazolopyrimidines, known as pyrazolopyrimidine, is the basis for a class of sedative and anxiolytic drugs related (in terms of their effect) to benzodiazepines. most of the drugs from this class marketed to date are intended to induce sleep, and are prescribed for people suffering insomnia, however some newer compounds produce anxiolytic effects with relatively little sedation, and are being developed for use as non-sedating anti-anxiety drugs. they include: zaleplon - hypnotic (trade name sonata) indiplon - hypnotic ocinaplon - anxiolytic lorediplon - hypnotic as they are not chemically related to the benzodiazepines despite their similar effect, such drugs—as well as the imidazopyridines and cyclopyrrones—are sometimes grouped together and referred to as "nonbenzodiazepines". zaleplon pesticides a related use is in pyrazolopyrimidine organothiophosphate pesticides including chlorprazophos (insecticide) and pyrazophos (fungicide, insecticide). pyrazophos