adb-binaca adb-binaca adb-binaca is a cannabinoid designer drug that has been found as an ingredient in some synthetic cannabis products. it was originally developed by pfizer as a potential analgesic, and is a potent agonist of the cb1 receptor with a binding affinity (ki) of 0.33 nm and an ec50 of 14.7 nm. adb-binacalegal statuslegal status ca: schedule ii de: npsg (industrial and scientific use only) uk: class b us: schedule i identifiers iupac name n--1-benzyl-1h-indazole-3-carboxamide cas number1185282-27-2 ypubchem cid129406620chemspider57621565uniipuvp61sosichemical and physical dataformulac21h24n4o2molar mass364.449 g·mol−13d model (jsmol)interactive image smiles o=c(nc(c(n)=o)c(c)(c)c)c1=nn(cc2=cc=cc=c2)c3=c1c=cc=c3 inchi inchi=1s/c21h24n4o2/c1-21(2,3)18(19(22)26)23-20(27)17-15-11-7-8-12-16(15)25(24-17)13-14-9-5-4-6-10-14/h4-12,18h,13h2,1-3h3,(h2,22,26)(h,23,27)key:iufiuawrcuvucq-uhfffaoysa-n adb-butinaca adb-butinacalegal statuslegal status ca: schedule ii de: npsg (industrial and scientific use only) uk: class b us: schedule i identifiers iupac name n--1-butyl-1h-indazole-3-carboxamide cas number2682867-55-4 ypubchem cid155907792chemspider81407832chemical and physical dataformulac18h26n4o2molar mass330.432 g·mol−13d model (jsmol)interactive image smiles o=c(n(c(n)=o)c(c)(c)c)c1=nn(cccc)c2=c1c=cc=c2 inchi inchi=1s/c18h26n4o2/c1-5-6-11-22-13-10-8-7-9-12(13)14(21-22)17(24)20-15(16(19)23)18(2,3)4/h7-10,15h,5-6,11h2,1-4h3,(h2,19,23)(h,20,24)/t15-/m1/s1key:gpwadxhyjazpax-oahllokosa-n the analogue with a 1-butyl substitution on the indazole ring rather than 1-benzyl has also been sold as a designer drug under the name adb-binaca, but is now more commonly referred to as adb-butinaca to avoid confusion with the benzyl compound. it is a similarly potent cb1 agonist, with an ec50 of 6.36 nm.