16-Epiestriol - ≥90% , CAS No.547-81-9

CAS: 547-81-9 Cat. No.: E336722 Molecular Weight: 288.38 EC Number: 208-937-9
AVAILABLE TO ORDER
GRADE & PURITY ≥90%
Synonyms
8XZ32LI44K | Estra-1,3,5(10)-triene-3,16.beta.,17.beta.-triol | NSC-758892 | Epiestriol | Q24897913 | NSC 26646 | Estra-1,3,5(10)-triene-3,16beta,17beta-triol | Estra-1,3,5(10)-triene-3,16beta,17beta-triol (16-epi-Estriol) | SCHEMBL221084 | NSC 758892 | U
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1mg
E336722-1mg
10
$41.90
5mg
E336722-5mg
6
$145.90
10mg
E336722-10mg
3
$232.90
25mg
E336722-25mg
3
$409.90
100mg
E336722-100mg
2
$1,139.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥90% 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 1 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

16-Epiestriol is a metabolite of Estradiol.

Specifications

Synonyms
8XZ32LI44K | Estra-1, 3, 5(10)-triene-3, 16.beta., 17.beta.-triol | NSC-758892 | Epiestriol | Q24897913 | NSC 26646 | Estra-1, 3, 5(10)-triene-3, 16beta, 17beta-triol | Estra-1, 3, 5(10)-triene-3, 16beta, 17beta-triol (16-epi-Estriol) | SCHEMBL221084 | NSC 758892 | U
Specifications & Purity
≥90%
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
≥90%
Names and Identifiers
Pubchem Sid488184184
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488184184
Canonical SmilesCC12CCC3C(C1CC(C2O)O)CCC4=C3C=CC(=C4)O
IUPAC Name(8R,9S,13S,14S,16S,17R)-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-3,16,17-triol
InChIKeyPROQIPRRNZUXQM-ZMSHIADSSA-N
INCHI1S/C18H24O3/c1-18-7-6-13-12-5-3-11(19)8-10(12)2-4-14(13)15(18)9-16(20)17(18)21/h3,5,8,13-17,19-21H,2,4,6-7,9H2,1H3/t13-,14-,15+,16+,17+,18+/m1/s1
Isomeric SMILES C[C@]12CC[C@H]3[C@H]([C@@H]1C[C@@H]([C@@H]2O)O)CCC4=C3C=CC(=C4)O
Molecular Weight 288.38
Reaxy-Rn 2057375
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=2057375&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
SubclassEstrane steroids
Intermediate Tree Nodes Not available
Direct ParentEstrogens and derivatives
Alternative Parents 3-hydroxysteroids  17-hydroxysteroids  16-beta-hydroxysteroids  Phenanthrenes and derivatives  Tetralins  1-hydroxy-2-unsubstituted benzenoids  Secondary alcohols  Cyclic alcohols and derivatives  1,2-diols  Hydrocarbon derivatives  
Molecular FrameworkAromatic homopolycyclic compounds
Substituents Estrogen-skeleton - 3-hydroxysteroid - 17-hydroxysteroid - 16-hydroxysteroid - 16-beta-hydroxysteroid - Hydroxysteroid - Phenanthrene - Tetralin - 1-hydroxy-2-unsubstituted benzenoid - Benzenoid - Cyclic alcohol - Secondary alcohol - 1,2-diol - Polyol - Organooxygen compound - Hydrocarbon derivative - Alcohol - Organic oxygen compound - Aromatic homopolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as estrogens and derivatives. These are steroids with a structure containing a 3-hydroxylated estrane.
External Descriptors C18 steroids (estrogens) and derivatives
3D Structure
Interactive Chemical Structure Model





Associated Targets(Human)
UGT1A4 Tbio UDP-glucuronosyltransferase 1A4 (288 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
UGT2B7 Tchem UDP-glucuronosyltransferase 2B7 (787 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
UGT2B17 Tbio UDP-glucuronosyltransferase 2B17 (197 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
UGT2B4 Tbio UDP-glucuronosyltransferase 2B4 (139 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
UGT2B15 Tbio UDP-glucuronosyltransferase 2B15 (172 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
UGT1A1 Tchem UDP-glucuronosyltransferase 1-1 (448 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
UGT1A7 Tbio UDP-glucuronosyltransferase 1-7 (106 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
UGT1A8 Tbio UDP-glucuronosyltransferase 1-8 (233 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
UGT1A10 Tbio UDP-glucuronosyltransferase 1-10 (257 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
UGT2A1 UDP-glucuronosyltransferase 2A1 (59 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Associated Targets(non-human)
Liver microsome (341 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.

16 results found

Lot NumberCertificate TypeDateItem
E2326468Certificate of AnalysisMar 11, 2026 E336722
E2326469Certificate of AnalysisMar 11, 2026 E336722
E2326471Certificate of AnalysisMar 11, 2026 E336722
E2326474Certificate of AnalysisMar 11, 2026 E336722
E2326476Certificate of AnalysisMar 11, 2026 E336722
J2227355Certificate of AnalysisAug 11, 2025 E336722
J2227358Certificate of AnalysisAug 11, 2025 E336722
H2409467Certificate of AnalysisJul 06, 2024 E336722
F2512039Certificate of AnalysisJul 06, 2024 E336722
H2409443Certificate of AnalysisJul 06, 2024 E336722
H2513163Certificate of AnalysisJul 06, 2024 E336722
E2326465Certificate of AnalysisApr 14, 2023 E336722
E2326475Certificate of AnalysisApr 14, 2023 E336722
J2227353Certificate of AnalysisOct 20, 2022 E336722
J2227361Certificate of AnalysisOct 20, 2022 E336722
J2227368Certificate of AnalysisOct 20, 2022 E336722

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Chemical and Physical Properties
SolubilitySoluble in Methanol
Melt Point(°C)265-2680°C (lit.)
Molecular Weight288.400 g/mol
XLogP32.500
Hydrogen Bond Donor Count3
Hydrogen Bond Acceptor Count3
Rotatable Bond Count0
Exact Mass288.173 Da
Monoisotopic Mass288.173 Da
Topological Polar Surface Area60.700 Ų
Heavy Atom Count21
Formal Charge0
Complexity411.000
Isotope Atom Count0
Defined Atom Stereocenter Count6
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Citations of This Product
References
1. Yingchao Liu, Jiahui Bai, Xiaoxia Dong, Yuqi Cao, Mingmai Bao, Yingjie Lu, Hui Zeng, Lixing Zhan, Yinlong Guo.  (2024)  Online Charge-Generation Derivatization by Electrochemical Radical Cations of Thianthrene: Mass Spectrometry Imaging of Estrogens in Biological Tissues.  ANALYTICAL CHEMISTRY,      [PMID:39031066] [10.1021/acs.analchem.4c02086]
Solution Calculators
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