CompoundList
Sign in
Steroids and sterols

Cucurbitacin E

Also known as alpha-Elaterin, alpha-Elaterine, 19-Norlanosta-1,5,23-triene-3,11,22-trione, 25-(acetyloxy)-2,16,20-trihydroxy-9-methyl-, (9beta,10alpha,16alpha,23E)-

CAS 18444-66-1Formula C32H44O8Molar mass 556.70 g/molEC 242-325-2
GHS signal word: Warning. Pictograms: Harmful or irritant 5 suppliers listed
Get quotes Compare 5 suppliers
Cucurbitacin E chemical structure, C32H44O8, CAS 18444-66-1
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
18444-66-1
Formula
C32H44O8
Molar mass
556.70 g/mol
EC number
242-325-2
HS code
291539
Category
Steroids and sterols

What is Cucurbitacin E?

Plain description, key identifiers and synonyms

Cucurbitacin E is a cucurbitacin in which a lanostane skeleton is multi-substituted with hydroxy, methyl and oxo substituents, with unsaturation at positions 1, 5 and 23. It is a tertiary alpha-hydroxy ketone and a cucurbitacin.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
[(E,6R)-6-[(8S,9R,10R,13R,14S,16R,17R)-2,16-dihydroxy-4,4,9,13,14-pentamethyl-3,11-dioxo-8,10,12,15,16,17-hexahydro-7H-cyclopenta[a]phenanthren-17-yl]-6-hydroxy-2-methyl-5-oxohept-3-en-2-yl] acetate
CAS number
18444-66-1 CAS number cross-checked
EC number
242-325-2
Molecular formula
C32H44O8
UNII
V8A45XYI21
MDL number
MFCD00135936
InChIKey
NDYMQXYDSVBNLL-MUYMLXPFSA-N
InChI
InChI=1S/C32H44O8/c1-17(33)40-27(2,3)13-12-23(36)32(9,39)25-21(35)15-29(6)22-11-10-18-19(14-20(34)26(38)28(18,4)5)31(22,8)24(37)16-30(25,29)7/h10,12-14,19,21-22,25,34-35,39H,11,15-16H2,1-9H3/b13-12+/t19-,21-,22+,25+,29+,30-,31+,32+/m1/s1
Canonical SMILES
CC(=O)OC(C)(C)C=CC(=O)C(C)(O)C1C(O)CC2(C)C3CC=C4C(C=C(O)C(=O)C4(C)C)C3(C)C(=O)CC12C
Isomeric SMILES
CC(=O)OC(C)(C)/C=C/C(=O)[C@@](C)([C@H]1[C@@H](C[C@@]2([C@@]1(CC(=O)[C@@]3([C@H]2CC=C4[C@H]3C=C(C(=O)C4(C)C)O)C)C)C)O)O

Synonyms

  • alpha-Elaterin
  • alpha-Elaterine
  • 19-Norlanosta-1,5,23-triene-3,11,22-trione, 25-(acetyloxy)-2,16,20-trihydroxy-9-methyl-, (9beta,10alpha,16alpha,23E)-
  • Cucurbitacine E
  • Elaterin, alpha
  • 19-Norlanosta-1,5,23-triene-3,11,22-trione,25-(acetyloxy)-2,16,20-trihydroxy-9-methyl-, (9b,10a,16a,23E)-
  • Cucurbitacine-E
  • CUE
  • Cucurbitacin-E
  • cent-Elaterin
  • 19-Nor-9beta,5,23-triene-3,11,22-trione, 2,16alpha,20,25-tetrahydroxy-9-methyl-, 25-acetate
  • 19-Norlanosta-1,23-triene-3,11,22-trione, 25-(acetyloxy)-2,16,20-trihydroxy-9-methyl-, (9beta,10alpha,16alpha,23E)-
  • Elaterin, -Elaterine
  • Cucurbitacin E (Standard)
  • (-)-Cucurbitacin e
  • Cucurbitacin E (alpha-Elaterin)
  • ST 32:7, O8
  • 2,16alpha,20,25-Tetrahydroxy-9beta-methyl-10alpha,-19-norlanosta-1,5,23(E)-triene-3,11,22-trione 25-acetate
  • 25-(Acetyloxy)-2,16,20-trihydroxy-9-methyl-19-norlanosta-1,5,23-triene-3,11,22-trione (9beta,10alpha,16alpha,23E)-
  • (23E)-25-acetyloxy-2,16alpha,20-trihydroxy-9beta-methyl-19-nor-10alpha-lanosta-1,5,23-triene-3,11,22-trione
  • (4R,23E)-2,16alpha,20-trihydroxy-9beta,10,14-trimethyl-1,11,22-trioxo-4,9-cyclo-9,10-secocholesta-2,5,23-trien-25-yl acetate
  • (9beta,10alpha,16alpha,23E)-25-(acetyloxy)-2,16,20-trihydroxy-9-methyl-19-norlanosta-1,5,23-triene-3,11,22-trione
  • [(E,6R)-6-[(8S,9R,10R,13R,14S,16R,17R)-2,16-dihydroxy-4,4,9,13,14-pentamethyl-3,11-dioxo-8,10,12,15,16,17-hexahydro-7H-cyclopenta[a]phenanthren-17-y
  • 19-Nor-9-beta,10-alpha-lanosta-1,5,23-triene-3,11,22-trione, 2,16-alpha,20,25-tetrahydroxy-9-methyl-, 25-acetate
  • 19-Nor-9beta,10alpha-lanosta-1,5,23-triene-3,11,22-trione, 2,16alpha,20,25-tetrahydroxy-9-methyl-, 25-acetate
Show all 26 synonyms
  • 2,16alpha,20,25-tetrahydroxy-9-methyl-19-nor-9beta,10alpha-lanosta-1,5,23-triene-3,11,22-trione 25-acetate

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
556.70 g/molcalc.
Exact mass
556.3036 Dacalc.
LogP (octanol/water)
4.19calc.
Topological polar surface area
138.2 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
8calc.
Rotatable bonds
5calc.
Heavy atoms
40calc.
Rings
4calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.69calc.
Formal charge
0calc.
Stereocentres
8calc.
Lipinski rule of five
Passes (1 violation)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, O=C1C=CC2C(=CCC3C4CCCC4CC(=O)C23)C1

O=C1C=CC2C(=CCC3C4CCCC4CC(=O)C23)C1

4 rings, 19 atoms.

12 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H302Harmful if swallowed.
Precautionary statements (5)
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P301 + P317If swallowed: Get medical help.
  • P330Rinse mouth.
  • P501Dispose of contents and container in accordance with local regulations.

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

Full safety data and first aid

Cucurbitacin E suppliers

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

All 5 suppliers
5 of 5 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

5 suppliers in 2 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

Cucurbitacin E 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

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

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Cucurbitacin E is traded under.

HS 2915.39Indicative HS code

Esters of acetic acid, other

World exports in 2024
$2.03B
+7.9% vs 2023, imports $1.95B
2019 to 2024
Top exporters
  1. China58.0%
  2. United States7.3%
  3. Germany6.5%
Top importers
  1. Singapore15.6%
  2. South Korea7.2%
  3. Indonesia6.9%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Cucurbitacin E, based on the data on this page

What is Cucurbitacin E?

Cucurbitacin E is a cucurbitacin in which a lanostane skeleton is multi-substituted with hydroxy, methyl and oxo substituents, with unsaturation at positions 1, 5 and 23. It is a tertiary alpha-hydroxy ketone and a cucurbitacin.

What is the CAS number of Cucurbitacin E?

The CAS registry number of Cucurbitacin E is 18444-66-1.

What is the molecular formula and weight of Cucurbitacin E?

The molecular formula of Cucurbitacin E is C32H44O8 and its molar mass is 556.70 g/mol.

Is Cucurbitacin E hazardous?

Cucurbitacin E carries the GHS signal word "Warning". Main hazards: harmful if swallowed. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Cucurbitacin E?

Cucurbitacin E is usually classified under HS code 291539 (Esters of acetic acid, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Cucurbitacin E?

CompoundList lists 5 suppliers of Cucurbitacin E in China and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Cucurbitacin E?

Suppliers quote Cucurbitacin E 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 Cucurbitacin E

Get quotes for Cucurbitacin E

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Cucurbitacin E
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 Cucurbitacin E 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/cucurbitacin-e-18444-66-1" title="Cucurbitacin E 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 Steroids and sterols or HS code 291539

5 suppliers
Free quotes, contact stays private
Get quotes