Molecular structure of D(+)-Ribonic acid gamma-lactone (CAS NO.5336-08-3) is:

Product Name: D(+)-Ribonic acid gamma-lactone
CAS Registry Number: 5336-08-3
IUPAC Name: (3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-one
Molecular Weight: 148.11402 [g/mol]  
Molecular Formula: C₅H₈O₅  
XLogP3-AA: -1.4  
H-Bond Donor: 3  
H-Bond Acceptor: 5
EINECS: 226-256-5
Melting Point: 83-85  ° C
Refractive index: 18 ° (C=1, H₂O)
Solubility: H₂O: 0.1 g/mL, clear
Water Solubility: soluble
Index of Refraction: 1.58 
Molar Refractivity: 29.59 cm³ 
Molar Volume: 88.8 cm³ 
Surface Tension: 86.7 dyne/cm 
Density: 1.667 g/cm³ 
Flash Point: 162.8 °C 
Enthalpy of Vaporization:  70.66 kJ/mol 
Boiling Point: 364.3 °C at 760 mmHg 
Vapour Pressure: 8.77E-07 mmHg at 25 °C 
Product Categories: Sugars, Carbohydrates & Glucosides;13C & 2H Sugars;Biochemistry;Ribose;Sugar Acids;Sugars;Dextrins、Sugar & Carbohydrates;Carbohydrates & Derivatives
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
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 
InChIKey: CUOKHACJLGPRHD-BXXZVTAOSA-N

 D(+)-Ribonic acid gamma-lactone (CAS NO.5336-08-3) can be used as an important chiral synthon.

Safty information about D(+)-Ribonic acid gamma-lactone (CAS NO.5336-08-3) is:
Safety Statements: 22-24/25 
S22:Do not breathe dust. 
S24/25:Avoid contact with skin and eyes.
WGK Germany: 3

 D(+)-Ribonic acid gamma-lactone , its cas register number is 5336-08-3. It also can be called D-Ribono-1,4-lactone ; D-Ribono-gamma-lactone ; D-Ribonolactone (VAN) ; D-Ribopentono-1,4-lactone ; Ribono-gamma-lactone ; gamma-Lactone of ribonic acid ; Ribonic acid, gamma-lactone, D- (8CI) .It is a white crystalline solid.