theodrenaline theodrenaline theodrenaline (inn), also known as noradrenalinoethyltheophylline, is a chemical linkage of norepinephrine (noradrenaline) and theophylline used as a cardiac stimulant. theodrenalineclinical dataatc codec01ca23 (who) identifiers iupac name (rs)-7-(2-ethyl)-1,3-dimethyl-3,7-dihydro-1h-purine-2,6-dione cas number13460-98-5pubchem cid71857chemspider64874 nuniirw8pd99t8gkeggd07155 ychemical and physical dataformulac17h21n5o5molar mass375.385 g·mol−13d model (jsmol)interactive image smiles cn1c2c(c(=o)n(c1=o)c)n(cn2)ccncc(c3ccc(c(c3)o)o)o inchi inchi=1s/c17h21n5o5/c1-20-15-14(16(26)21(2)17(20)27)22(9-19-15)6-5-18-8-13(25)10-3-4-11(23)12(24)7-10/h3-4,7,9,13,18,23-25h,5-6,8h2,1-2h3 nkey:wmcmjiglyzdkrn-uhfffaoysa-n n ny (what is this?) (verify) it is sometimes combined with cafedrine.