cafaminol cafaminol cafaminol (brand names rhinetten, rhinoptil), also known as methylcoffanolamine, is a vasoconstrictor and anticatarrhal of the methylxanthine family related to caffeine which is used as a nasal decongestant in germany. it was introduced in 1974 and was still in use as of 2000. cafaminolclinical datatrade namesrhinetten, rhinoptilother namesmethylcoffanolamine; 8-caffeineatc codenonelegal statuslegal status in general: ℞ (prescription only) identifiers iupac name 8--1,3,7-trimethyl-3,7-dihydro-1h-purine-2,6-dione cas number30924-31-3pubchem cid35685chemspider32824unii0l1s25nc1lchemblchembl2104570comptox dashboard (epa)dtxsid60184916 echa infocard100.045.795 chemical and physical dataformulac11h17n5o3molar mass267.289 g·mol−13d model (jsmol)interactive image smiles o=c2n(c1nc(n(c1c(=o)n2c)c)n(cco)c)c inchi inchi=1s/c11h17n5o3/c1-13(5-6-17)10-12-8-7(14(10)2)9(18)16(4)11(19)15(8)3/h17h,5-6h2,1-4h3key:zgnrrvaphpanfi-uhfffaoysa-n