immethridine immethridine immethridine is a histamine agonist selective for the h3 subtype. immethridine names preferred iupac name 4-pyridine identifiers cas number 87976-03-2 y 3d model (jsmol) interactive image chembl chembl82298 n chemspider 8165087 n echa infocard 100.163.679 iuphar/bps 4024 pubchem cid 9989505 unii f8zt2ibm1x y comptox dashboard (epa) dtxsid70587878 inchi inchi=1s/c9h9n3/c1-3-10-4-2-8(1)5-9-6-11-7-12-9/h1-4,6-7h,5h2,(h,11,12) nkey: dfvsgzhjsieeqq-uhfffaoysa-n ninchi=1/c9h9n3/c1-3-10-4-2-8(1)5-9-6-11-7-12-9/h1-4,6-7h,5h2,(h,11,12)key: dfvsgzhjsieeqq-uhfffaoyaf smiles c1=cn=cc=c1cc2=cn=cn2 properties chemical formula c9h9n3 molar mass 159.188 g/mol 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