lactose

Lactose

Names
IUPAC name β-D-Galactopyranosyl-(1→4)-D-glucose
Systematic IUPAC name (2R,3R,4S,5R,6S)-2-(Hydroxymethyl)-6-{[(2R,3S,4R,5R,6R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy}oxane-3,4,5-triol
Other names Milk sugar Lactobiose 4-O-β-D-Galactopyranosyl-D-glucose
Identifiers
CAS Number	63-42-3 Y
3D model (JSmol)	Interactive image
Beilstein Reference	90841
ChEBI	CHEBI:36218 Y
ChEMBL	ChEMBL417016 Y
ChemSpider	5904 Y
EC Number	200-559-2
Gmelin Reference	342369
KEGG	C01970
PubChem CID	6134
UNII	3SY5LH9PMK Y
InChI InChI=1S/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3)23-10-4(2-14)21-11(20)8(18)7(10)17/h3-20H,1-2H2/t3-,4-,5+,6+,7-,8-,9-,10-,11-,12+/m1/s1 Y Key: GUBGYTABKSRVRQ-DCSYEGIMSA-N Y InChI=1/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3)23-10-4(2-14)21-11(20)8(18)7(10)17/h3-20H,1-2H2/t3-,4-,5+,6+,7-,8-,9-,10-,11-,12+/m1/s1 Key: GUBGYTABKSRVRQ-DCSYEGIMBP
SMILES C([C@@H]1[C@@H]([C@@H]([C@H]([C@@H](O1)O[C@@H]2[C@H](O[C@H]([C@@H]([C@H]2O)O)O)CO)O)O)O)O
Properties
Chemical formula	C12H22O11
Molar mass	342.297 g·mol−1
Appearance	White solid
Density	1.525 g/cm3
Melting point	252 °C (anhydrous) 202 °C (monohydrate)
Solubility in water	195 g/L
Chiral rotation ([α]D)	+55.4° (anhydrous) +52.3° (monohydrate)
Thermochemistry
Std enthalpy of combustion	5652 kJ/mol, 1351 kcal/mol, 16.5 kJ/g, 3.94 kcal/g
Hazards
NFPA 704 (fire diamond)	0 0 0
Flash point	357.8 °C (676.0 °F; 631.0 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Angol

Főnév

lactose (tsz. lactoses)

1. (gyógyszertan) laktóz

További információk

• lactose - Szótár.net (en-hu)
• lactose - Sztaki (en-hu)
• lactose - Merriam–Webster
• lactose - Cambridge
• lactose - WordNet
• lactose - Яндекс (en-ru)
• lactose - Google (en-hu)
• lactose - Wikidata
• lactose - Wikipédia (angol)