8205. d-Ribose-5-phosphoric Acid

Nomenclature

CAS number: 4300-28-1
5-(Dihydrogen phosphate)-d-ribose; d-ribofuranose-5-phosphoric acid; d-ribose-5-phosphate.
C5H11O8P; mol wt 230.11.
C 26.10%, H 4.82%, O 55.62%, P 13.46%.

Description and references

From inosinic acid: Levene, Jacobs, Ber. 41, 2703 (1908); 44, 746 (1911); Levene, Mori, J. Biol. Chem. 81, 215 (1929); Levene, Stiller, ibid. 104, 299 (1934); LePage, Umbreit, ibid. 148, 255 (1943); Marmur et al., Arch. Biochem. Biophys. 34, 209 (1951). Purification: Groth et al., J. Biol. Chem. 199, 389 (1952). Differentiation between ribose-5-phosphate and ribose-3-phosphate by means of the orcinol-pentose reaction: Albaum, Umbreit, ibid. 167, 369 (1947).

Chemical structure

Derivative

Barium salt hemihendecahydrate.
C5H9BaO8P.5 1/2 H2O; mol wt 464.50.
C 12.93%, H 4.34%, Ba 29.56%, O 46.50%, P 6.67%.

Properties

Hexagonal plates from water. Sparingly soluble in cold water. Reduces Fehling's soln.