ce-123 ce-123 ce-123 is an analog of modafinil, the most researched of a series of structurally related heterocyclic derivatives. in animal studies, ce-123 was found to improve performance on tests of learning and memory in a manner consistent with a nootropic effect profile. ce-123legal statuslegal status uk: under psychoactive substances act identifiers iupac name (s)-5-(benzhydrylsulfinylmethyl)-1,3-thiazole cas number1879038-73-9pubchem cid118871455chemspider110407278unii2p6t8sd99lchemblchembl4456176chemical and physical dataformulac17h15no2s2molar mass329.43 g·mol−13d model (jsmol)interactive image smiles o=s(cc1cncs1)c(c2ccccc2)c3ccccc3 inchi inchi=1s/c17h15nos2/c19-21(12-16-11-18-13-20-16)17(14-7-3-1-4-8-14)15-9-5-2-6-10-15/h1-11,13,17h,12h2key:vbbbwhdwylusel-uhfffaoysa-n