Molecular properties
- Formula
- C12H22O11
- Molar mass
- 342.30 g·mol−1
- Exact mass
- 342.1162 Da
- 2
- 8
- 11
- 190.00 Ų
- -4.7 (PubChem computed XLogP3-AA descriptor)
- CAS
- 5965-66-2
- PubChem CID
- 6134
Molecule record
lactose
C12H22O11
342.30 g/mol
Interactions
- Polarity
- Often polar; exact polarity depends on size, substitution, and ionization state.
- Acid-base behavior
- Review ionizable groups and pKa data where available; ChemForge does not infer definitive acid-base state from identity alone.
- Intermolecular forces
- Assess dispersion, dipole interactions, hydrogen bonding, and ionic character from the functional groups shown.
Functional groups
Alcohol
Physical properties
| Property | Value | Conditions | Source |
|---|---|---|---|
| Logp | -4.7 | PubChem computed XLogP3-AA descriptor | PubChem(link only) |
Common names and synonyms
- (+)-Lactose
- .beta.-Lactose
- 13Q3A43E0S
- 227-751-9
- 4-(beta-D-Galactosido)-D-glucose
- 4-O-beta-D-Galactopyranosyl-D-glucose
- 4-O-beta-D-Galactopyranosyl-beta-D-glucopyranose
- 5965-66-2
Show all 23 synonyms
- CHEBI:36218
- D-(+)-Lactose
- D-Glucose, 4-O-beta-D-galactopyranosyl
- D-Lactose
- DTXCID50196482
- DTXSID5058723
- G84224TW
- GlyTouCan:G84224TW
- Lactose [JAN]
- Milk sugar
- RefChem:5602
- beta-D-Glucopyranose, 4-O-beta-D-galactopyranosyl-
- beta-D-Lactose
- beta-D-galactopyranosyl-(1->4)-beta-D-glucopyranose
- beta-Lactose
Structure identifiers
- Canonical 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
- Isomeric 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
- 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
- InChIKey
- GUBGYTABKSRVRQ-DCSYEGIMSA-N
- PubChem CID
- 6134
Spectroscopy
Tabs appear only for spectra stored with clear provenance.
Simulated FTIR trace
Predicted FTIR / %T
4 cm-1 resolution / deterministic instrument profile
Hover for cursor
Peak assignments
3350 cm−1broad O-H (simulated)
2960 cm−1sp3 C-H (simulated)
Simulated NMR
On-demand educational prediction for lactose; not experimental data.
Simulated EI mass spectrum
On-demand educational fragmentation for lactose; not experimental data.
Sources
Molecule identity
Retrieved 8/7/2026. Reuse status is summarized by the badge; open the source for full details.
simulated IR
ChemForge original educational simulation.