trimu 5 trimu 5 trimu-5 is a selective agonist of the μ2-opioid receptor and antagonist of the μ1-opioid receptor. it produces analgesia in animals that differs from that of conventional μ-opioid receptor agonists but that can still be blocked by μ-opioid receptor antagonists. trimu-5 can also block the analgesic effects of μ-opioid receptor agonists like morphine. in addition to analgesia, trimu-5 inhibits gastrointestinal transit, a known effect of μ2-opioid receptor activation. trimu 5 names iupac name l-tyrosyl-n--d-alaninamide systematic iupac name (2r)-2-amino-3-(4-hydroxyphenyl)-n-acetamido}-1-oxopropan-2-yl]propanamide identifiers cas number 90815-77-3 n 3d model (jsmol) interactive image chemspider 21106389 y pubchem cid 5487273 comptox dashboard (epa) dtxsid80905105 inchi inchi=1s/c19h30n4o4/c1-12(2)8-9-21-11-17(25)23-18(26)13(3)22-19(27)16(20)10-14-4-6-15(24)7-5-14/h4-7,12-13,16,21,24h,8-11,20h2,1-3h3,(h,22,27)(h,23,25,26)/t13-,16?/m1/s1 ykey: qogvshvpimzzrn-jbzhpucosa-n yinchi=1/c19h30n4o4/c1-12(2)8-9-21-11-17(25)23-18(26)13(3)22-19(27)16(20)10-14-4-6-15(24)7-5-14/h4-7,12-13,16,21,24h,8-11,20h2,1-3h3,(h,22,27)(h,23,25,26)/t13-,16?/m1/s1key: qogvshvpimzzrn-jbzhpucobn smiles oc1ccc(c(n)c(=o)n(c)c(=o)nc(=o)cnccc(c)c)cc1 properties chemical formula c19h30n4o4 molar mass 378.466 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