Lactose 3D structure

Lactose (also called beta-D-Lactose, beta-Lactose) has the formula C₁₂H₂₂O₁₁ and a molar mass of 342.30 g/mol. The model above is PubChem's computed 3D conformer: drag to rotate, scroll to zoom, and use the measurement tools to read bond lengths and angles.

Formula: C₁₂H₂₂O₁₁
Molar mass: 342.30 g/mol
PubChem CID: 6134
Heavy atoms: 23
Category: Sugars

Explore in 3D Space-filling model PubChem

Identifiers

IUPAC name	(2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol
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`
PubChem CID	6134
Other names	beta-D-Lactose, beta-Lactose, D-Lactose, 4-O-beta-D-Galactopyranosyl-beta-D-glucopyranose, Milk sugar

How to read the 3D model

Atoms use the standard CPK colors: carbon gray, hydrogen white, oxygen red, nitrogen blue, sulfur yellow. Switch to Spacefill to see the molecule's overall shape and size, or Stick for a clear view of the bonds. Click two atoms in distance mode to measure a bond length in ångströms.

3D coordinates are PubChem's computed conformer, one low-energy shape of the molecule. Flexible molecules can take many other shapes.

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