arprinocid arprinocid arprinocid is a coccidiostat (or more likely a coccidiocide, i.e. a drug killing coccidia parasites) used in veterinary medicine. arprinocidclinical dataatcvet codeqp51ax11 (who) identifiers iupac name 9--6-purinamine cas number55779-18-5 npubchem cid41574chemspider37936 yunii6a0xta8zuhkeggd02987 ychemblchembl321993 ycomptox dashboard (epa)dtxsid3057773 echa infocard100.054.362 chemical and physical dataformulac12h9clfn5molar mass277.69 g·mol−13d model (jsmol)interactive image smiles c1=cc(=c(c(=c1)cl)cn2c=nc3=c2n=cn=c3n)f inchi inchi=1s/c12h9clfn5/c13-8-2-1-3-9(14)7(8)4-19-6-18-10-11(15)16-5-17-12(10)19/h1-3,5-6h,4h2,(h2,15,16,17) ykey:napnosfrrmhnbj-uhfffaoysa-n y ny (what is this?) (verify) synthesis arprinocid synthesis: merck & co. r. j. tull, g. d. hartman, and l. m. weinstock, u.s. patent 4,098,787 (1978).