CompoundList
Sign in
Respiratory, allergy and digestive drugs

Lactulose

Also known as D-Lactulose, Bifiteral, Cephulac

CAS 4618-18-2Formula C12H22O11Molar mass 342.30 g/molEC 225-027-7
51 suppliers listed Drug substance
Get quotes Compare 51 suppliers
Lactulose chemical structure, C12H22O11, CAS 4618-18-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
4618-18-2
Formula
C12H22O11
Molar mass
342.30 g/mol
EC number
225-027-7
HS code
294000
Category
Respiratory, allergy and digestive drugs

What is Lactulose?

Plain description, key identifiers and synonyms

Lactulose is a synthetic galactosylfructose disaccharide used in the treatment of constipation and hepatic encephalopathy. It has a role as a laxative and a gastrointestinal drug.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2S,3R,4S,5R,6R)-2-[(2R,3S,4S,5R)-4,5-dihydroxy-2,5-bis(hydroxymethyl)oxolan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol
CAS number
4618-18-2 CAS number cross-checkedOther or deprecated CAS: 58166-24-8, 58166-25-9
EC number
225-027-7
Molecular formula
C12H22O11
UNII
9U7D5QH5AE, 9XH2P2N8EP
INCI name
LACTULOSE
InChIKey
JCQLYHFGKNRPGE-FCVZTGTOSA-N
InChI
InChI=1S/C12H22O11/c13-1-4-6(16)7(17)8(18)11(21-4)22-9-5(2-14)23-12(20,3-15)10(9)19/h4-11,13-20H,1-3H2/t4-,5-,6+,7+,8-,9-,10+,11+,12-/m1/s1
Canonical SMILES
OCC1OC(OC2C(CO)OC(O)(CO)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@@]([C@H]2O)(CO)O)CO)O)O)O)O

Synonyms

  • D-Lactulose
  • Bifiteral
  • Cephulac
  • Chronulac
  • Constilac
  • Lactulosa
  • Acilac
  • Cholac
  • Constulose
  • Lactulosum
  • Enulose
  • Generlac
  • Heptalac
  • Laxilose
  • Portalac
  • Kristalose
  • Lattulosio
  • 4-O-beta-D-Galactopyranosyl-D-fructose
  • Lactulose jp17
  • 4-galactosyl fructose
  • 4-O-beta-D-Galactopyranosyl-D-fructofuranose
  • D-Fructose, 4-O-beta-D-galactopyranosyl-
  • (2S,3R,4S,5R,6R)-2-{[(2R,3S,4S,5R)-4,5-dihydroxy-2,5-bis(hydroxymethyl)oxolan-3-yl]oxy}-6-(hydroxymethyl)oxane-3,4,5-triol
  • Osmolax
  • Regulose
Show all 38 synonyms
  • Lemlax
  • Laxose orange
  • Duphalac Dry
  • Lactulose Solution
  • (2S,3R,4S,5R,6R)-2-(((2R,3S,4S,5R)-4,5-dihydroxy-2,5-bis(hydroxymethyl)oxolan-3-yl)oxy)-6-(hydroxymethyl)oxane-3,4,5-triol
  • GlyTouCan:G57229GY
  • Lactulose Solution USP, 10 g/15 mL
  • beta-D-Galactopyranosyl-(1->4)-D-fructose
  • 6-deoxy-3-C-methyl-D-mannose
  • Evalose
  • Isolactose
  • Laevolac
  • 4-O-beta-D-galactopyranosyl-beta-D-fructofuranose

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
5calc.
Heavy atoms
23calc.
Rings
2calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
9calc.
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(OC2CCOC2)OC1

C1CCC(OC2CCOC2)OC1

2 rings, 12 atoms.

16 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.

Lactulose suppliers

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

All 51 suppliers
30 of 30 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

51 suppliers in 14 countries

Send one request to many suppliers

Choose up to 10 suppliers or let us match your request. Compare quotes side by side, free.

Choose suppliersPost a request

Lactulose price

Indicative price range per kg from live supplier offers

No published prices right now

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

Get latest price

Uses and applications

What the substance is used for, by industry and function

Use classes: Cosmetics.

Cosmetic ingredient, INCI name LACTULOSE(humectant, skin conditioning)

Pharmacological actions

  • Gastrointestinal Agents

Roles

  • dermatologic drug
  • gastrointestinal drug
  • hepatoprotective agent
  • laxative
  • pharmaceutical
  • protective agent

Functional uses

  • Humectant
  • Softener and conditioner

Cosmetic functions

  • Humectant
  • Skin conditioning

Pharmacology

Lactulose is an Osmotic Laxative. The mechanism of action of lactulose is as an Osmotic Activity and Acidifying Activity. The physiologic effect of lactulose is by means of Stimulation Large Intestine Fluid/Electrolyte Secretion.

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory
  • Active ingredient in FDA approved drug labels

United States

  • TSCA inventory (USA)
    Status: Inactive 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 Lactulose is traded under.

HS 2940.00Indicative HS code

Sugar ethers, sugar acetals and sugar esters, and their salts, other than the products of heading 29.37…

World exports in 2024
$1.4B
−5.4% vs 2023, imports $1.42B
2019 to 2024
Top exporters
  1. Germany23.7%
  2. China20.6%
  3. United States11.5%
Top importers
  1. United States14.0%
  2. Japan7.4%
  3. Germany6.1%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Lactulose, based on the data on this page

What is Lactulose?

Lactulose is a synthetic galactosylfructose disaccharide used in the treatment of constipation and hepatic encephalopathy. It has a role as a laxative and a gastrointestinal drug.

What is the CAS number of Lactulose?

The CAS registry number of Lactulose is 4618-18-2. Other or deprecated CAS numbers: 58166-24-8, 58166-25-9.

What is the molecular formula and weight of Lactulose?

The molecular formula of Lactulose is C12H22O11 and its molar mass is 342.30 g/mol.

What is Lactulose used for?

Use classes: Cosmetics.

Is Lactulose hazardous?

No GHS hazard classification for Lactulose 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 Lactulose?

Lactulose is usually classified under HS code 294000 (Sugars, chemically pure, other than sucrose, lactose, maltose, glucose and fructose…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Lactulose?

CompoundList lists 51 suppliers of Lactulose in China, United States, Germany, Spain 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 Lactulose in India?

2 suppliers in India list Lactulose on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Lactulose?

Suppliers quote Lactulose 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 Lactulose

Get quotes for Lactulose

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Lactulose
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Lactulose with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/lactulose-4618-18-2" title="Lactulose structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Respiratory, allergy and digestive drugs or HS code 294000

51 suppliers
Free quotes, contact stays private
Get quotes