5-amino-6-(((2S,3S,4R)-2,3,4,5-tetrahydroxypentyl)amino)pyrimidine-2,4(1H,3H)-dione; 5-Amino-6-ribitylamino-2,4(1H,3H)-pyrimidinedione Dihydrochloride; 4-(1'-D-Ribitylamino)-5-amino-2,6-dihydroxypyrimidine Dihydrochloride; 4-(Ribitylamino)-5-aminouracil; 4-Ribitylamino-5-amino-2,6-dihydroxypyrimidine Dihydrochloride; 5-Amino-6-[(D-ribo-2,3,4,5-tetrahydroxypentyl)amino]uracil Dihydrochloride; 1-[(5-Amino-1,2,3,6-tetrahydro-2,6-dioxo-4-pyrimidinyl)amino]-1-deoxy-D-ribitol Dihydrochloride;