bephenium hydroxynaphthoate bephenium hydroxynaphthoate bephenium hydroxynaphthoate (inn, trade names alcopara, alcopar, befenium, debefenium, francin, nemex) is an anthelmintic agent formerly used in the treatment of hookworm infections and ascariasis. it is formulated as a salt between the active pharmaceutical ingredient, bephenium, and 3-hydroxy-2-naphthoic acid. bephenium hydroxynaphthoateclinical datapregnancycategory undefined routes ofadministrationoralatc codep02cx02 (who) pharmacokinetic databioavailability<1%excretionrenal (negligible)identifiers iupac name n-benzyl-n,n-dimethyl-2-phenoxyethanaminium 3-hydroxynaphthalene-2-carboxylate cas number3818-50-6 n 7181-73-9 (bephenium)pubchem cid54678490chemspider18524 yunii47ru9546dxchemblchembl1673148 ncomptox dashboard (epa)dtxsid8022662 echa infocard100.021.189 chemical and physical dataformulac28h29no4molar mass443.543 g·mol−13d model (jsmol)interactive image smiles c(c)(ccoc1ccccc1)cc2ccccc2.c1ccc2cc(c(cc2c1)c(=o))o inchi inchi=1s/c17h22no.c11h8o3/c1-18(2,15-16-9-5-3-6-10-16)13-14-19-17-11-7-4-8-12-17;12-10-6-8-4-2-1-3-7(8)5-9(10)11(13)14/h3-12h,13-15h2,1-2h3;1-6,12h,(h,13,14)/q+1;/p-1 nkey:pmpqcpqahtxcdk-uhfffaoysa-m n ny (what is this?) (verify) bephenium is not fda-approved and is not available in the united states.