thc morpholinylbutyrate thc morpholinylbutyrate thc morpholinylbutyrate (sp-111, δ9-thc-o-) is a synthetic derivative of tetrahydrocannabinol, developed in the 1970s. it is a prodrug which is converted into thc inside the body, and was one of the first derivatives of thc that is able to form water-soluble salts, giving it a significant advantage over thc for some applications. however, it is less potent than thc and the metabolic conversion to thc is relatively slow and variable, giving it unpredictable pharmacokinetics which has limited its research applications. thc morpholinylbutyrateidentifiers iupac name chromen-1-yl] 4-morpholin-4-ylbutanoate cas number55602-38-5 ypubchem cid6453212chemspider4955601unii77fjy4kz74chemblchembl3301967comptox dashboard (epa)dtxsid30204150 chemical and physical dataformulac29h43no4molar mass469.666 g·mol−13d model (jsmol)interactive image smiles cccccc1=cc2=c(3c=c(cc3c(o2)(c)c)c)c(=c1)oc(=o)cccn4ccocc4 inchi inchi=1s/c29h43no4/c1-5-6-7-9-22-19-25(33-27(31)10-8-13-30-14-16-32-17-15-30)28-23-18-21(2)11-12-24(23)29(3,4)34-26(28)20-22/h18-20,23-24h,5-17h2,1-4h3/t23-,24-/m1/s1key:haqnktbqoiawdb-dnqxcxabsa-n