E1024 Sigma-Aldrich


meets USP testing specifications

Synonym: β-Estradiol, 1,3,5-Estratriene-3,17β-diol, 17β-Estradiol, 3,17β-Dihydroxy-1,3,5(10)-estratriene, Dihydrofolliculin

  • CAS Number 50-28-2

  • Empirical Formula (Hill Notation) C18H24O2

  • Molecular Weight 272.38

  •  Beilstein/REAXYS Number 1914275

  •  EC Number 200-023-8

  •  MDL number MFCD00003693

  •  PubChem Substance ID 24894380

  •  NACRES NA.21



Related Categories Analytical/Chromatography, Application Index, Biochemicals and Reagents, Carbohydrates, Carbohydrates A to Z,
Agency/Method   meets USP testing specifications
Quality Level   200
mp   176-180 °C (lit.)
Featured Industry   Pharmaceutical (small molecule)
SMILES string   O[C@H]1CC[C@@]2([H])[C@]3([H])CCC4=CC(O)=CC=C4[C@@]3([H])CC[C@@]21C
InChI   1S/C18H24O2/c1-18-9-8-14-13-5-3-12(19)10-11(13)2-4-15(14)16(18)6-7-17(18)20/h3,5,10,14-17,19-20H,2,4,6-9H2,1H3/t14-,15-,16+,17+,18+/m1/s1
Gene Information   human ... ESR1(2099), ESR2(2100), ESRRB(2103), GPER(2852), SERPINA6(866)
mouse ... Esr1(13982), Esr2(13983), Esrra(26379)
rat ... Afp(24177), Ar(24208), Esr1(24890), Esr2(25149), Shbg(24775)



1, 25, 100 g in glass bottle

Biochem/physiol Actions

The major estrogen secreted by the premenopausal ovary. Estrogens direct the development of the female phenotype in embryogenesis and during puberty by regulating gene transcription and, thus, protein synthesis. It also induces the production of gonadotropins which, in turn, induce ovulation. Exposure to estradiol increases breast cancer incidence and proliferation.

Safety & Documentation

Safety Information

GHS08  GHS08
Signal word 
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
What is Product E1024, Estradiol, soluble in?
It is soluble in ethanol, acetone, dioxane, and sparingly in vegetable oils.
What is the solution stability of Product E1024, Estradiol?
Since this material is air sensitive, it is best to prepare solutions fresh.
What is the working range of Product E1024, Estradiol?
For cell culture applications, the working range of this compound is 0.2 - 10 ng/mL.For cell culture tested beta-estradiol, please refer to Sigma-Aldrich Prod. Nos. E2758 and E2257.
How do I find price and availability?
There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 or view local office numbers.
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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