gigantine gigantine gigantine is an tetrahydroisoquinoline alkaloid found in carnegiea gigantea and other related cacti. gigantine was first discovered along with macromerine in 1967. it is found in significant quantities in many mescaline-containing cactus species, but it is unclear whether gigantine contributes in any way to their psychoactive effects. gigantine names preferred iupac name (1s)-6,7-dimethoxy-1,2-dimethyl-1,2,3,4-tetrahydroisoquinolin-5-ol identifiers cas number 32829-58-6 y 3d model (jsmol) interactive image chemspider 390724 n pubchem cid 442237 unii 5qo2ddt36d y comptox dashboard (epa) dtxsid70331777 inchi inchi=1s/c13h19no3/c1-8-10-7-11(16-3)13(17-4)12(15)9(10)5-6-14(8)2/h7-8,15h,5-6h2,1-4h3/t8-/m0/s1 nkey: hrjquaxwkyisjc-qmmmgpobsa-n ninchi=1/c13h19no3/c1-8-10-7-11(16-3)13(17-4)12(15)9(10)5-6-14(8)2/h7-8,15h,5-6h2,1-4h3/t8-/m0/s1key: hrjquaxwkyisjc-qmmmgpobbt smiles o(c1cc2c(c(o)c1oc)ccn(c)2c)c properties chemical formula c13h19no3 molar mass 237.299 g·mol−1 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