sch-442,416 sch-442,416 sch-442,416 is a highly selective adenosine a2a subtype receptor antagonist. it is widely used in its 11c radiolabelled form to map the distribution of a2a receptors in the brain, where they are mainly found in the striatum, nucleus accumbens, and olfactory tubercle. given its distribution in the brain, a2a receptors have been investigated for the treatment of various neurological disorders, and sch-442,416 has shown promise in treatment of depression, parkinson's disease, and catalepsy. sch-442,416 names preferred iupac name 2-(furan-2-yl)-7--7h-pyrazolotriazolopyrimidin-5-amine other names sch-442,416 identifiers cas number 316173-57-6 n 3d model (jsmol) interactive image chembl chembl136689 y chemspider 8843413 y iuphar/bps 3283 pubchem cid 10668061 unii zmc4g1w59s n comptox dashboard (epa) dtxsid70443263 inchi inchi=1s/c20h19n7o2/c1-28-14-8-6-13(7-9-14)4-2-10-26-18-15(12-22-26)19-23-17(16-5-3-11-29-16)25-27(19)20(21)24-18/h3,5-9,11-12h,2,4,10h2,1h3,(h2,21,24) ykey: aeulvflpcjobce-uhfffaoysa-n yinchi=1/c20h19n7o2/c1-28-14-8-6-13(7-9-14)4-2-10-26-18-15(12-22-26)19-23-17(16-5-3-11-29-16)25-27(19)20(21)24-18/h3,5-9,11-12h,2,4,10h2,1h3,(h2,21,24)key: aeulvflpcjobce-uhfffaoyaa smiles n1n3c(nc4c(c3nc1c2occc2)cnn4cccc5ccc(oc)cc5)n properties chemical formula c20h19n7o2 molar mass 389.410 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). n verify (what is yn ?) infobox references