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alpha-Estradiol

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alpha-Estradiol molecular structure
Molecular structure

The Sigma-Aldrich catalog lists 4 grades and pack sizes of alpha-Estradiol (CAS 57-91-0). Pick the code you need and request a quote for price and lead time from Klar Chem.

CAS57-91-0
Molecular formulaC18H24O2
Molecular weight272.39 g/mol
IUPAC name(8R,9S,13S,14S,17R)-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-3,17-diol
Synonyms17alpha-Estradiol · Alfatradiol · 17a-estradiol · Estradiol-17alpha · 3,17-Dihydroxyestratriene · Epiestrol
Safety & Hazards (GHS) Danger
Health hazard Health hazard
  • H351 Suspected of causing cancer
  • H360 May damage fertility or the unborn child
  • H362 May cause harm to breast-fed children

⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).

Catalog codes and grades

Brand Product / grade Code
Sigma 17A-ESTRADIOL E8750-100MG
E8750-1G
E8750-500MG		 Request Quote
Sigma ALPHA-ESTRADIOL VETRANAL 46542-100MG Request Quote

For information only; specifications and availability are confirmed at quotation. Prices are not listed.