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Carbohydrates and sugars

alpha-D-Lactose

Also known as alpha-lactose, alpha-D-Glucopyranose, 4-O-beta-D-galactopyranosyl-, (2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol

CAS 14641-93-1Formula C12H22O11Molar mass 342.30 g/molEC 238-691-8
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alpha-D-Lactose chemical structure, C12H22O11, CAS 14641-93-1
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
14641-93-1
Formula
C12H22O11
Molar mass
342.30 g/mol
EC number
238-691-8
HS code
170211
Category
Carbohydrates and sugars

What is alpha-D-Lactose?

Plain description, key identifiers and synonyms

Alpha-lactose is the alpha-anomer of lactose.

alpha-D-Lactose is a sugar that exists in milk and dairy.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol
CAS number
14641-93-1 CAS number cross-checkedOther or deprecated CAS: 10039-26-6, 1336-90-9, 52689-62-0, 63-42-3, 64044-51-5
EC number
238-691-8
Molecular formula
C12H22O11
UNII
MJF4JAT10B
MDL number
MFCD00064074, MFCD00151251, MFCD00191455
InChIKey
GUBGYTABKSRVRQ-XLOQQCSPSA-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

  • alpha-lactose
  • alpha-D-Glucopyranose, 4-O-beta-D-galactopyranosyl-
  • (2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol
  • beta-D-galactopyranosyl-(1->4)-alpha-D-glucopyranose
  • (2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-{[(2R,3S,4R,5R,6S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy}oxane-3,4,5-triol
  • (2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-(((2R,3S,4R,5R,6S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl)oxy)oxane-3,4,5-triol
  • (2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-((2R,3S,4R,5R,6S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl)oxyoxane-3,4,5-triol
  • GlyTouCan:G88362QR
  • (2S,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
  • 4-O-beta-D-Galactopyranosyl-alpha-D-glucopyranose
  • A-MILK SUGAR
  • Lactobiose
  • Osmolactan
  • (2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6S)-4,5,6-trihydroxy-2-(hydroxymethyl)tetrahydropyran-3-yl]oxy-tetrahydropyran-3,4,5-triol
  • 1-beta-D-Galactopyranosyl-4-alpha-D-glucopyranose
  • Super-Tab
  • Tablettose 70
  • Tablettose 80
  • Dilactose
  • Pharmatose 325M
  • a-Lactose
  • Sorbalac 400
  • Flowlac 100
  • Pharmatosa DCL 21
  • 4-O-Hexopyranosylhexose
Show all 37 synonyms
  • 6-Deoxy-D-lactose
  • Sachelac
  • Spherolac
  • alpha lactose
  • GLC-(4-1)GAL
  • lactose bp/usp
  • Lactose anhydride
  • a-D-lactose
  • D-Lactose monohy
  • 4ouj
  • cent-Lactose
  • Lactohale 300

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.

alpha-D-Lactose suppliers

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All 2 suppliers

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Where suppliers are based

2 suppliers in 1 country

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alpha-D-Lactose price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

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 alpha-D-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 alpha-D-Lactose is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is alpha-D-Lactose?

Alpha-lactose is the alpha-anomer of lactose.

What is the CAS number of alpha-D-Lactose?

The CAS registry number of alpha-D-Lactose is 14641-93-1. Other or deprecated CAS numbers: 10039-26-6, 1336-90-9, 52689-62-0.

What is the molecular formula and weight of alpha-D-Lactose?

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

Is alpha-D-Lactose hazardous?

No GHS hazard classification for alpha-D-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 alpha-D-Lactose?

alpha-D-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 alpha-D-Lactose?

CompoundList lists 2 suppliers of alpha-D-Lactose in China. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of alpha-D-Lactose?

Suppliers quote alpha-D-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 alpha-D-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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