α-Cholestane - ≥97%(GC) , CAS No.481-21-0

CAS: 481-21-0 Cat. No.: C133856 Formula: C27H48 Molecular Weight: 372.67 Beilstein Registry Number: 2051806 EC Number: 207-562-8
AVAILABLE TO ORDER
GRADE & PURITY ≥97%(GC)
Synonyms
Cholestane | 5.alpha.-Cholestane | 5-alpha-Cholestane | 5alpha-Cholestane | 28,29,30-Trinorlanostane | .alpha.-Cholestane | alpha-Cholestane | U260HWN305 | Cholestane, (5.alpha.)- | (5alpha)-Cholestane | CHEBI:35515 | Cholestane (VAN) | 5a-CHOLESTANE
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
★
Size
Germany (EU)
USA*
Price
Qty
20mg
C133856-20mg
—
3 In stock
€25.95
100mg
C133856-100mg
—
5 In stock
€86.69
500mg
C133856-500mg
—
1 In stock
€312.30
Enter a quantity for the sizes you want to add.
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Why this grade

≥97%(GC) for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at -20°C Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 6 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

5α-Cholestane is a biochemical reagent that can be used as a biological material or organic compound for life science related research. 

Purpose

5-α-Cholestane has been used:
as an internal standard in gas phase chromatography (GC) and high-performance liquid chromatography (HPLC) to quantify cholesterol in meat products for a comparison study
to quantify the active compounds in the oils using a gas chromatograph coupled to a mass spectrometer
as a reference standard in GC analyses to quantify sterol content in the unsaponifiables obtained from oat lipids and different sterol standards like fucosterol, sitosterol, campesterol, and stigmasterol

Specifications

Synonyms
Cholestane | 5.alpha.-Cholestane | 5-alpha-Cholestane | 5alpha-Cholestane | 28,29,30-Trinorlanostane | .alpha.-Cholestane | alpha-Cholestane | U260HWN305 | Cholestane, (5.alpha.)- | (5alpha)-Cholestane | CHEBI:35515 | Cholestane (VAN) | 5a-CHOLESTANE
Specifications & Purity
≥97%(GC)
Biochemical and Physiological Mechanisms
5α-Cholestane is a sterol produced endogenously from cholesterol and has been isolated from human feces. It is derived from cholesterol by the action of intestinal microorganisms.Derivatives of 5α-cholestane in plants are called Brassinosteroids that sele
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥97%(GC)
Names and Identifiers
Pubchem Sid
Pubchem Sid Url
https://pubchem.ncbi.nlm.nih.gov/substance/488192214
Canonical Smiles
CC(C)CCCC(C)C1CCC2C1(CCC3C2CCC4C3(CCCC4)C)C
IUPAC Name
(5R,8R,9S,10S,13R,14S,17R)-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene
InChIKey
XIIAYQZJNBULGD-XWLABEFZSA-N
INCHI
1S/C27H48/c1-19(2)9-8-10-20(3)23-14-15-24-22-13-12-21-11-6-7-17-26(21,4)25(22)16-18-27(23,24)5/h19-25H,6-18H2,1-5H3/t20-,21-,22+,23-,24+,25+,26+,27-/m1/s1
Isomeric SMILES
C[C@H](CCCC(C)C)[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CC[C@@H]4[C@@]3(CCCC4)C)C
WGK Germany
3
Molecular Weight
372.67
Beilstein
2051806
Reaxy-Rn
1912740
Reaxys-RN_link_address
https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1912740&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassLipids and lipid-like molecules
ClassSteroids and steroid derivatives
SubclassCholestane steroids
Intermediate Tree Nodes Not available
Direct ParentCholestane steroids
Alternative Parents Polycyclic hydrocarbons  Saturated hydrocarbons  
Molecular FrameworkAliphatic homopolycyclic compounds
Substituents Cholestane-skeleton - Polycyclic hydrocarbon - Saturated hydrocarbon - Hydrocarbon - Aliphatic homopolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as cholestane steroids. These are steroids with a structure containing the 27-carbon cholestane skeleton.
External Descriptors cholestane
3D Structure
Interactive Chemical Structure Model





Associated Targets(Human)
SLCO1B1 Tchem Solute carrier organic anion transporter family member 1B1 (2672 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Mechanisms of Action
Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

24 results found

Lot NumberCertificate TypeDateItem
H2626300Certificate of AnalysisAug 20, 2026 C133856
H2626299Certificate of AnalysisAug 20, 2026 C133856
H2626298Certificate of AnalysisAug 20, 2026 C133856
B2307797Certificate of AnalysisAug 03, 2026 C133856
B2307879Certificate of AnalysisAug 03, 2026 C133856
D2402018Certificate of AnalysisJan 21, 2026 C133856
L2504284Certificate of AnalysisApr 30, 2025 C133856
L2504283Certificate of AnalysisApr 30, 2025 C133856
B2628135Certificate of AnalysisApr 30, 2025 C133856
L2504282Certificate of AnalysisApr 30, 2025 C133856
D2527140Certificate of AnalysisApr 09, 2025 C133856
D2527141Certificate of AnalysisApr 09, 2025 C133856
I2402575Certificate of AnalysisAug 20, 2024 C133856
I2402574Certificate of AnalysisAug 20, 2024 C133856
A2514076Certificate of AnalysisAug 20, 2024 C133856
H2412078Certificate of AnalysisAug 01, 2024 C133856
H2412080Certificate of AnalysisAug 01, 2024 C133856
H2412079Certificate of AnalysisAug 01, 2024 C133856
H2209381Certificate of AnalysisMay 08, 2024 C133856
H2209382Certificate of AnalysisMay 08, 2024 C133856
K2109483Certificate of AnalysisAug 15, 2023 C133856
B2307834Certificate of AnalysisNov 03, 2022 C133856
B23071035Certificate of AnalysisNov 03, 2022 C133856
H2209383Certificate of AnalysisJul 29, 2022 C133856
Chemical and Physical Properties
x_melt_point_char80-82°C
Molecular Weight372.700 g/mol
XLogP311.100
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count0
Rotatable Bond Count5
Exact Mass372.376 Da
Monoisotopic Mass372.376 Da
Topological Polar Surface Area0.000 Ų
Heavy Atom Count27
Formal Charge0
Complexity506.000
Isotope Atom Count0
Defined Atom Stereocenter Count8
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
FAQs and Articles
Citations of This Product
Solution Calculators
Reviews

Customer Reviews

Frequently Asked Questions

What is the purity of this product, and how is it determined?
This product is supplied at ≥97% purity, determined by gas chromatography (GC). Lot-specific values are stated on the Certificate of Analysis.
What are the CAS number, molecular formula and molecular weight?
The CAS Number is 481-21-0, the molecular formula is C27H48, and the molecular weight is 372.67 g/mol. InChIKey XIIAYQZJNBULGD-XWLABEFZSA-N.
What documentation is provided?
Available product documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and specification sheets, is shown in the product document area. Document availability and access follow the current site policy.
How should this product be stored?
Store at ?20 °C. Freezer storage is required to maintain the specified shelf life.
How is this product shipped?
This product ships in an insulated container with ice pads. Unpack on arrival and transfer it to the storage condition stated above.

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