choline theophyllinate choline theophyllinate choline theophyllinate (inn), also known as oxtriphylline, is a cough medicine derived from xanthine that acts as a bronchodilator to open up airways in the lung. chemically, it is a salt of choline and theophylline. it classifies as an expectorant. the drug is available under the brand names choledyl and choledyl sa, among others. choline theophyllinateclinical datatrade namescholedyl, theocolinother namesoxtriphyllineahfs/drugs.cominternational drug namesatc coder03da02 (who) pharmacokinetic dataexcretionmainly via kidneysidentifiers iupac name (2-hydroxyethyl)trimethylazanium; 1,3-dimethyl-2,6-dioxo-2,3,6,7-tetrahydro-1h-purin-7-ide cas number4499-40-5 ypubchem cid656652drugbankdb01303chemspider25044543571001unii3k045xr58xkeggd02017chemblchembl1200434comptox dashboard (epa)dtxsid20894867 echa infocard100.022.545 chemical and physical dataformulac12h21n5o3molar mass283.332 g·mol−13d model (jsmol)interactive image smiles cn1c(c-2ncnc2n(c1=o)c).c(c)(c)cco inchi inchi=1s/c7h8n4o2.c5h14no/c1-10-5-4(8-3-9-5)6(12)11(2)7(10)13;1-6(2,3)4-5-7/h3,12h,1-2h3;7h,4-5h2,1-3h3/q;+1/p-1key:soelxobiiiblrj-uhfffaoysa-m