Lactulose

CAS	4618-18-2
Structure
Synonyms	Caloryl
IUPAC Name	(2S,3R,4S,5R,6R)-2-[(2R,3S,4S,5R)-4,5-Dihydroxy-2,5-bis(hydroxymethyl)oxolan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol
Molecular Weight	342.3
Molecular Formula	C12H22O11
Canonical SMILES	C(C1C(C(C(C(O1)OC2C(OC(C2O)(CO)O)CO)O)O)O)O
InChI	InChI=1S/C12H22O11/c13-1-4-6(16)7(17)8(18)11(21-4)22-9-5(2-14)23-12(20,3-15)10(9)19/h4-11,13-20H,1-3H2/t4-,5-,6+,7+,8-,9-,10+,11+,12-/m1/s1
InChI Key	JCQLYHFGKNRPGE-FCVZTGTOSA-N
Boiling Point	397.76 °C
Melting Point	169 °C
Purity	99%
Density	1.32 g/cm³
Refractive Index	1.45-1.47
pKa	11.67±0.20(Predicted)
Solubility in Water	76.4 g/100mL (30 ºC)
Appearance	White to almost white powder