lp-44 lp-44 lp-44 is a drug which acts as a potent and selective agonist at the 5ht7 serotonin receptor. while lp-44 is less selective than the related compound lp-12, it has been more widely used in research and has been used to show the complex role of 5-ht7 receptors in several aspects of brain function, including regulation of the sleep-wake cycle and roles in stress, learning and memory. lp-44identifiers iupac name 4--n-(1,2,3,4-tetrahydronaphthalen-1-yl)-1-piperazinehexanamide cas number824958-12-5 ypubchem cid11224758chemspider9399811 nuniim5k3jup5ezcomptox dashboard (epa)dtxsid50459307 chemical and physical dataformulac27h37n3osmolar mass451.67 g·mol−13d model (jsmol)interactive image smiles c3cccc2c3cccc2nc(=o)cccccn(cc4)ccn4c1ccccc1sc inchi inchi=1s/c27h37n3os/c1-32-26-15-7-6-14-25(26)30-20-18-29(19-21-30)17-8-2-3-16-27(31)28-24-13-9-11-22-10-4-5-12-23(22)24/h4-7,10,12,14-15,24h,2-3,8-9,11,13,16-21h2,1h3,(h,28,31) nkey:jnbbjuhcodfleg-uhfffaoysa-n n ny (what is this?) (verify)