Ribonolactone

D-Ribono-1,4-lactone D-ribono-1,4-lactone is a five-membered form of ribonolactone having D-configuration. It has a role as a metabolite. It is a ribonolactone and a butan-4-olide. It derives from a D-ribonic acid. Ribonolactone belongs to the class of organic compounds known as pentoses. These are monosaccharides in which the carbohydrate moiety contains five carbon atoms. Ribonolactone exists as a solid, soluble (in water), and a very weakly acidic compound (based on its pKa). Ribonolactone has been primarily detected in urine. Within the cell, ribonolactone is primarily located in the cytoplasm. Ribonolactone can be biosynthesized from D-ribonic acid. CAS Number 5336-08-3 Product Name D-Ribono-1,4-lactone IUPAC Name (3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-one Molecular Formula C5H8O5 Molecular Weight 148.11 g/mol InChI InChI=1S/C5H8O5/c6-1-2-3(7)4(8)5(9)10-2/h2-4,6-8H,1H2/t2-,3-,4-/m1/s1 InChI Key CUOKHACJLGPRHD-BXXZVTAOSA-N SMILES C(C1C(C(C(=O)O1)O)O)O Synonyms D-(+)-Ribonic Acid ?-Lactone; D-(+)-Ribonolactone; D-Ribono-1,4-lactone; NSC 1031; Canonical SMILES C(C1C(C(C(=O)O1)O)O)O Isomeric SMILES C([C@@H]1[C@H]([C@H](C(=O)O1)O)O)O COA: D-Ribono-1,4-lactone CAS?5336-08-3 Items Standards Results Appearance White powder Complies Solubility Clear to very slightly hazy colorless to faint yellow solution Complies MS and NMR Should comply Comply Identification IR and TLC Comply Loss weight on dryness Max. 0.5% 0.2% Residue on ignition Max. 0.5% 0.1% Purity by TLC Min. 98% Complies References: 1. Caperelli CA, Liu D, J. Biol. Chem. 1992, Vol267, Issue 14, 9783-9787