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Carbohydrates and sugars

beta-Lactose

Also known as beta-D-Lactose, lactose, D-Lactose

CAS 5965-66-2Formula C12H22O11Molar mass 342.30 g/molEC 227-751-9
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beta-Lactose chemical structure, C12H22O11, CAS 5965-66-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
5965-66-2
Formula
C12H22O11
Molar mass
342.30 g/mol
EC number
227-751-9
HS code
170211
Category
Carbohydrates and sugars

What is beta-Lactose?

Plain description, key identifiers and synonyms

Beta-lactose is the beta-anomer of lactose.

Identifiers

Registry numbers, names and line notations, tap to copy

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
CAS number
5965-66-2 CAS number cross-checkedOther or deprecated CAS: 63-42-3
EC number
227-751-9
Molecular formula
C12H22O11
UNII
13Q3A43E0S
InChIKey
GUBGYTABKSRVRQ-DCSYEGIMSA-N
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
Canonical SMILES
OCC1OC(OC2C(CO)OC(O)C(O)C2O)C(O)C(O)C1O
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

Synonyms

  • beta-D-Lactose
  • lactose
  • D-Lactose
  • 4-O-beta-D-Galactopyranosyl-beta-D-glucopyranose
  • Milk sugar
  • beta-D-Glucopyranose, 4-O-beta-D-galactopyranosyl-
  • (+)-Lactose
  • beta-D-galactopyranosyl-(1->4)-beta-D-glucopyranose
  • 4-(beta-D-Galactosido)-D-glucose
  • GlyTouCan:G84224TW
  • D-Glucose, 4-O-beta-D-galactopyranosyl
  • 4-O-beta-D-Galactopyranosyl-D-glucose
  • D-(+)-Lactose
  • Lactobiose
  • (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
  • 4-O-Hexopyranosylhexopyranose
  • lactosum , anhydrous
  • (2R,3R,4R,5S,6R)-6-(Hydroxymethyl)-5-(((2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2,3,4-triol
  • (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
  • Osmolactan
  • (2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6R)-4,5,6-trihydroxy-2-(hydroxymethyl)tetrahydropyran-3-yl]oxy-tetrahydropyran-3,4,5-triol
  • Super-Tab
  • Tablettose 70
  • Tablettose 80
  • Pharmatose 325M
Show all 35 synonyms
  • Sorbalac 400
  • Flowlac 100
  • Pharmatosa DCL 21
  • LAT
  • ss-Lactose
  • Lactose, beta-
  • 1gwv
  • 1gzc
  • 2zgm
  • Galbeta1-4Glcbeta

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
342.30 g/molcalc.
Exact mass
342.1162 Dacalc.
LogP (octanol/water)
-5.4calc.
Topological polar surface area
189.5 Ųcalc.
Hydrogen bond donors
8calc.
Hydrogen bond acceptors
11calc.
Rotatable bonds
4calc.
Heavy atoms
23calc.
Rings
2calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
10calc.
Lipinski rule of five
Fails (2 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, C1CCC(OC2CCCOC2)OC1

C1CCC(OC2CCCOC2)OC1

2 rings, 13 atoms.

536 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

beta-Lactose suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 63 suppliers
30 of 30 offers

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Where suppliers are based

63 suppliers in 14 countries

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beta-Lactose price

Indicative price range per kg from live supplier offers

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Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Use classes: Cosmetics.

Functional uses

  • Flavouring and nutrient
  • Fragrance
  • Humectant
  • Lubricating agent
  • Oxidizing agent
  • Processing aids not otherwise specified
  • Softener and conditioner
  • Solvent
  • Surfactant (surface active agent)
  • Thickening agent

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code beta-Lactose is traded under.

HS 1702.11Indicative HS code

Lactose and lactose syrup, containing by weight 99 % or more lactose, expressed as…

Our trade statistics cover HS chapters 25 to 40 (minerals, chemicals, plastics and rubber). This code is in chapter 17, sugars and sugar confectionery, which is not included yet.

Reported customs values in USD, not prices.Full trade data

The HS code shown for beta-Lactose is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about beta-Lactose, based on the data on this page

What is beta-Lactose?

Beta-lactose is the beta-anomer of lactose.

What is the CAS number of beta-Lactose?

The CAS registry number of beta-Lactose is 5965-66-2. Other or deprecated CAS numbers: 63-42-3.

What is the molecular formula and weight of beta-Lactose?

The molecular formula of beta-Lactose is C12H22O11 and its molar mass is 342.30 g/mol.

What is beta-Lactose used for?

Use classes: Cosmetics.

Is beta-Lactose hazardous?

No GHS hazard classification for beta-Lactose is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of beta-Lactose?

beta-Lactose is usually classified under HS code 170211 (Lactose and lactose syrup, containing by weight 99 % or more lactose, expressed as…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy beta-Lactose?

CompoundList lists 63 suppliers of beta-Lactose in United States, China, India, United Kingdom and 10 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy beta-Lactose in India?

6 suppliers in India list beta-Lactose on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of beta-Lactose?

Suppliers quote beta-Lactose on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle beta-Lactose

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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