IUPAC name: (2S,3R,4S,5S)-Oxane-2,3,4,5-tetrol
Molecular Formula: C₅H₁₀O₅
Molecular Weight: 150.13 g/mol
EINECS: 201-767-6 
Melting point: 160-163 °C
Alpha: 103 °(c=5, H₂O)
Water solubility: soluble 
Index of Refraction: 1.646
Surface Tension: 75.3 dyne/cm
Density: 1.757 g/cm³
Flash Point: 155.3 °C
Enthalpy of Vaporization: 66.74 kJ/mol
Boiling Point: 333.2 °C at 760 mmHg
Vapour Pressure: 9.92E-06 mmHg at 25 °C 
Appearance: White to off white crystalline powder
Product Categories: Sugars,Carbohydrates & Glucosides;Dextrins Sugar & Carbohydrates
Following is the structure of L(+)-Arabinose (CAS NO.87-72-9):
   

 L(+)-Arabinose (CAS NO.87-72-9) hasn't been listed as a carcinogen by ACGIH, IARC, NTP, or CA Prop 65. And the toxicological properties have not been fully investigated.

Hazard Codes: Xn
Risk Statements: 20/21/22-36/37/38 
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed. 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 24/25-36-26
S24/25:Avoid contact with skin and eyes. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing.
WGK Germany: 3
F: 3-10

 L(+)-Arabinose , its cas register number is 87-72-9. It also can be called L-Arabinopyranose . It is stable under normal temperatures and pressures. And it incompatible with strong oxidizing agents. L(+)-Arabinose (CAS NO.87-72-9) should avoid the condition of incompatible materials. Its hazardous decomposition products are carbon monoxide and carbon dioxide. Its hazardous polymerization will not occur.