CompoundList
Sign in
Steroids and sterols

Withanolide B

Also known as (5alpha,6alpha,7alpha,22R)-5-Hydroxy-6,7:22,26-diepoxyergosta-2,24-diene-1,26-dione, Ergosta-2,24-dien-26-oic acid, 6,7-epoxy-5,22-dihydroxy-1-oxo-, delta-lactone, (5alpha,6alpha,7alpha,22R)-, Lycium substance B

CAS 56973-41-2Formula C28H38O5Molar mass 454.61 g/molEC 685-416-6
4 suppliers listed
Get quotes Compare 4 suppliers
Withanolide B chemical structure, C28H38O5, CAS 56973-41-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
56973-41-2
Formula
C28H38O5
Molar mass
454.61 g/mol
EC number
685-416-6
HS code
293220
Category
Steroids and sterols

What is Withanolide B?

Plain description, key identifiers and synonyms

Withanolide B is a withanolide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(1S,2S,4S,5R,10R,11S,14R,15R,18S)-15-[(1S)-1-[(2R)-4,5-dimethyl-6-oxo-2,3-dihydropyran-2-yl]ethyl]-5-hydroxy-10,14-dimethyl-3-oxapentacyclo[9.7.0.02,4.05,10.014,18]octadec-7-en-9-one
CAS number
56973-41-2 CAS number cross-checked
EC number
685-416-6
Molecular formula
C28H38O5
UNII
9YU877VU8K
MDL number
MFCD19053156
InChIKey
ZTEVDTFJUUJBLP-MBMSZCMESA-N
InChI
InChI=1S/C28H38O5/c1-14-13-20(32-25(30)15(14)2)16(3)17-8-9-18-22-19(10-12-26(17,18)4)27(5)21(29)7-6-11-28(27,31)24-23(22)33-24/h6-7,16-20,22-24,31H,8-13H2,1-5H3/t16-,17+,18-,19-,20+,22-,23-,24-,26+,27-,28-/m0/s1
Canonical SMILES
CC1=C(C)C(=O)OC(C(C)C2CCC3C4C5OC5C5(O)CC=CC(=O)C5(C)C4CCC23C)C1
Isomeric SMILES
CC1=C(C(=O)O[C@H](C1)[C@@H](C)[C@H]2CC[C@@H]3[C@@]2(CC[C@H]4[C@H]3[C@H]5[C@H](O5)[C@@]6([C@@]4(C(=O)C=CC6)C)O)C)C

Synonyms

  • (5alpha,6alpha,7alpha,22R)-5-Hydroxy-6,7:22,26-diepoxyergosta-2,24-diene-1,26-dione
  • Ergosta-2,24-dien-26-oic acid, 6,7-epoxy-5,22-dihydroxy-1-oxo-, delta-lactone, (5alpha,6alpha,7alpha,22R)-
  • Lycium substance B
  • 15-[1-(4,5-Dimethyl-6-oxo-2,3-dihydropyran-2-yl)ethyl]-5-hydroxy-10,14-dimethyl-3-oxapentacyclo[9.7.0.02,4.05,10.014,18]octadec-7-en-9-one
  • Withanolide b(p)(new)
  • Withanolide B, analytical standard
  • (22R)-5-Hydroxy-5alpha,6alpha,7alpha-6,7:22,26-diepoxyergosta-2,24-diene-1,26-dione

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
454.61 g/molcalc.
Exact mass
454.2719 Dacalc.
LogP (octanol/water)
4.38calc.
Topological polar surface area
76.13 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
5calc.
Rotatable bonds
2calc.
Heavy atoms
33calc.
Rings
6calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.79calc.
Formal charge
0calc.
Stereocentres
11calc.
Lipinski rule of five
Passes (0 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, O=C1C=CCC(CC2CCC3C2CCC2C4C(=O)C=CCC4C4OC4C32)O1

O=C1C=CCC(CC2CCC3C2CCC2C4C(=O)C=CCC4C4OC4C32)O1

6 rings, 27 atoms.

8 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS classification
Hazard pictograms

Hazard statements

  • H413May cause long lasting harmful effects to aquatic life.
Precautionary statements (2)
  • P273Avoid release to the environment.
  • 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

Withanolide B suppliers

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

All 4 suppliers
4 of 4 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

4 suppliers in 4 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

Withanolide B 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 Withanolide B is traded under.

HS 2932.20Indicative HS code

Lactones

World exports in 2024
$1.97B
−4.7% vs 2023, imports $2.07B
2019 to 2024
Top exporters
  1. China56.3%
  2. India * partner reported7.4%
  3. Germany7.3%
Top importers
  1. United States14.2%
  2. India * partner reported13.5%
  3. Brazil8.5%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Withanolide B, based on the data on this page

What is Withanolide B?

Withanolide B is a withanolide.

What is the CAS number of Withanolide B?

The CAS registry number of Withanolide B is 56973-41-2.

What is the molecular formula and weight of Withanolide B?

The molecular formula of Withanolide B is C28H38O5 and its molar mass is 454.61 g/mol.

Is Withanolide B hazardous?

Withanolide B has a GHS hazard classification. Main hazards: may cause long lasting harmful effects to aquatic life. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Withanolide B?

Withanolide B is usually classified under HS code 293220 (Lactones). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Withanolide B?

CompoundList lists 4 suppliers of Withanolide B in China, United Kingdom, India and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Withanolide B in India?

1 supplier in India list Withanolide B on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Withanolide B?

Suppliers quote Withanolide B 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 Withanolide B

Get quotes for Withanolide B

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Withanolide B
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 Withanolide B 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/withanolide-b-56973-41-2" title="Withanolide B 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 293220

4 suppliers
Free quotes, contact stays private
Get quotes