Synonyms: Alniditan dihydrochloride [USAN];(-)-2-((3-(((R)-2-Chromanylmethyl)amino)propyl)amino)-1,4,5,6-tetrahydropyrimidine dihydrochloride;(R)-N-((3,4-Dihydro-2H-1-benzopyran-2-yl)methyl)-N'-(1,4,5,6-tetrahydro-2-pyrimidinyl)-1,3-propanediamine dihydrochloride;1,3-Propanediamine, N-((3,4-dihydro-2H-1-benzopyran-2-yl)methyl)-N'-(1,4,5,6-tetrahydro-2-pyrimidinyl)-,dihydrochloride, (R)-;Alniditan HCl;Alniditan dihydrochloride;N-(3,4-Dihydro-2H-1-benzopyran-2-yl methyl)-N'-(1,4,5,6-tetrahydro-2-pyrimidinyl)-1,3-propanediamine dihydrochloride;N-[(2R)-3,4-dihydro-2H-chromen-2-ylmethyl]-N'-(1,4,5,6-tetrahydropyrimidin-2-yl)propane-1,3-diamine;N-[(2R)-3,4-dihydro-2H-chromen-2-ylmethyl]-N'-(1,4,5,6-tetrahydropyrimidin-2-yl)propane-1,3-diamine dihydrochloride