Estriol Related Compounds & Impurities

Estriol is a weak oestrogen produced primarily during pregnancy, used topically for urogenital atrophy in postmenopausal women.

Simson Pharma Limited along with its subsidiary offices Simson Pharma Global Ltd. (UK) and Simson Pharma Global LLC (USA) is a trusted manufacturer and supplier of high-quality pharmaceutical reference standards, offering a comprehensive portfolio of Estriol reference standards, pharmacopeial and non-pharmacopeial Estriol impurities, related compounds, related substances, metabolites, stable isotope-labelled compounds, deuterium labelled compounds and nitrosamine (N-NO) reference standards.

These materials support pharmaceutical research and development, product development, ANDA and DMF submissions, quality control (QC), analytical method development and validation, stability studies, impurity identification, and genotoxic impurity assessment.

Our Estriol-related reference standards are thoroughly characterized using advanced analytical techniques and are supplied with comprehensive Certificates of Analysis (COA) and supporting analytical data from our USFDA certified, ISO 17025 and ISO 17034 accredited Lab, to meet global regulatory expectations. EP and USP traceable reference standards can also be provided upon request, subject to availability. Simson is also a provider of EP and USP traceable standards. To ensure consistent quality and reliability, our reference standards are periodically re-tested according to established quality management procedures.

Pharmaceutical Reference Standards / Impurity Standards

Estriol
Estriol
  • CAT. No.E600000
  • CAS. No.50-27-1
  • Mol. F.C18H24O3
  • Mol. W.288.38 g/mol
  • Stock Status:Instock
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17-Epiestriol
17-Epiestriol
  • CAT. No.E600002
  • CAS. No.1228-72-4
  • Mol. F.C18H24O3
  • Mol. W.288.38 g/mol
  • Stock Status:Custom Synthesis
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9,11-Didehydrooestriol
9,11-Didehydrooestriol
  • CAT. No.E600003
  • CAS. No.246021-20-5
  • Mol. F.C18H22O3
  • Mol. W.286.37 g/mol
  • Stock Status:Custom Synthesis
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16,17-epi-Estriol
16,17-epi-Estriol
  • CAT. No.E600004
  • CAS. No.793-89-5
  • Mol. F.C18H24O3
  • Mol. W.288.38 g/mol
  • Stock Status:Custom Synthesis
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Estriol Methyl Ether
Estriol Methyl Ether
  • CAT. No.E600005
  • CAS. No.1474-53-9
  • Mol. F.C19H26O3
  • Mol. W.302.41 g/mol
  • Stock Status:Custom Synthesis
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Estriol EP Impurity H
Estriol EP Impurity H
  • CAT. No.E600007
  • CAS. No.566-76-7
  • Mol. F.C18H22O3
  • Mol. W.286.37 g/mol
  • Stock Status:Custom Synthesis
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Estriol EP Impurity I
Estriol EP Impurity I
  • CAT. No.E600008
  • CAS. No.15370-49-7
  • Mol. F.C18H22O3
  • Mol. W.286.37 g/mol
  • Stock Status:Custom Synthesis
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2-Hydroxy Estrone
2-Hydroxy Estrone
  • CAT. No.E600009
  • CAS. No.362-06-1
  • Mol. F.C18H22O3
  • Mol. W.286.37 g/mol
  • Stock Status:Custom Synthesis
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Estriol Impurity 3
Estriol Impurity 3
  • CAT. No.E600010
  • CAS. No.58001-91-5
  • Mol. F.C18H24O4
  • Mol. W.304.38 g/mol
  • Stock Status:Custom Synthesis
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Estriol Impurity 2
Estriol Impurity 2
  • CAT. No.E600011
  • CAS. No.1426679-35-7
  • Mol. F.C25H30O4
  • Mol. W.394.50 g/mol
  • Stock Status:Custom Synthesis
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Estetrol monohydrate
Estetrol monohydrate
  • CAT. No.E600012
  • CAS. No.2055649-81-3
  • Mol. F.C18H26O5
  • Mol. W.322.40 g/mol
  • Stock Status:Instock
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Estradiol Impurity 5
Estradiol Impurity 5
  • CAT. No.E600013
  • CAS. No.NA
  • Mol. F.C18H20O3
  • Mol. W.284.35 g/mol
  • Stock Status:Custom Synthesis
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Estetrol
Estetrol
  • CAT. No.E600014
  • CAS. No.15183-37-6
  • Mol. F.C18H24O4
  • Mol. W.304.39 g/mol
  • Stock Status:Instock
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(13S,15R,16R,17R)-13-methyl-7,8,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthrene-3,15,16,17-tetraol
(13S,15R,16R,17R)-13-methyl-7,8,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthrene-3,15,16,17-tetraol
  • CAT. No.E600015
  • CAS. No.NA
  • Mol. F.C18H22O4
  • Mol. W.302.36 g/mol
  • Stock Status:Custom Synthesis
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Estetrol Impurity 2
Estetrol Impurity 2
  • CAT. No.E600016
  • CAS. No.NA
  • Mol. F.C18H20O4
  • Mol. W.300.35 g/mol
  • Stock Status:Custom Synthesis
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Estetrol Impurity 4
Estetrol Impurity 4
  • CAT. No.E600017
  • CAS. No.1426679-39-1
  • Mol. F.C24H38O4Si
  • Mol. W.418.64 g/mol
  • Stock Status:Custom Synthesis
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6-Oxo-Estetrol
6-Oxo-Estetrol
  • CAT. No.E600018
  • CAS. No.59996-11-1
  • Mol. F.C18H22O5
  • Mol. W.318.36 g/mol
  • Stock Status:Custom Synthesis
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Estriol Impurity 4
Estriol Impurity 4
  • CAT. No.E600019
  • CAS. No.NA
  • Mol. F.C18H24O4
  • Mol. W.304.38 g/mol
  • Stock Status:Under Synthesis
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Estriol Impurity 1
Estriol Impurity 1
  • CAT. No.E600022
  • CAS. No.NA
  • Mol. F.C24H38O4Si
  • Mol. W.418.64 g/mol
  • Stock Status:Custom Synthesis
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Estriol Impurity 5
Estriol Impurity 5
  • CAT. No.E600023
  • CAS. No.NA
  • Mol. F.C18H24O4
  • Mol. W.304.38 g/mol
  • Stock Status:Custom Synthesis
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4-Hydroxy Estrone
4-Hydroxy Estrone
  • CAT. No.E600024
  • CAS. No.3131-23-5
  • Mol. F.C18H22O3
  • Mol. W.286.40 g/mol
  • Stock Status:Custom Synthesis
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Estriol Impurity 6
Estriol Impurity 6
  • CAT. No.E600026
  • CAS. No.690996-25-9
  • Mol. F.C27H30O3
  • Mol. W.402.53 g/mol
  • Stock Status:Custom Synthesis
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3-O-Benzyl Estetrol 17-Acetate
3-O-Benzyl Estetrol 17-Acetate
  • CAT. No.E600027
  • CAS. No.690996-24-8
  • Mol. F.C27H32O5
  • Mol. W.436.54 g/mol
  • Stock Status:Custom Synthesis
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Estetrol 17-Acetate
Estetrol 17-Acetate
  • CAT. No.E600028
  • CAS. No.690996-23-7
  • Mol. F.C20H26O5
  • Mol. W.346.42 g/mol
  • Stock Status:Custom Synthesis
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2,4-Dibromo Estetrol
2,4-Dibromo Estetrol
  • CAT. No.E600029
  • CAS. No.NA
  • Mol. F.C18H22Br2O4
  • Mol. W.462.17 g/mol
  • Stock Status:Custom Synthesis
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Estriol Impurity 7
Estriol Impurity 7
  • CAT. No.E600030
  • CAS. No.NA
  • Mol. F.C20H24O4
  • Mol. W.328.40 g/mol
  • Stock Status:Custom Synthesis
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6-Oxo Estriol
6-Oxo Estriol
  • CAT. No.E600031
  • CAS. No.NA
  • Mol. F.C18H22O4
  • Mol. W.302.36 g/mol
  • Stock Status:Custom Synthesis
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Metabolites

2-Hydroxyestradiol
2-Hydroxyestradiol
  • CAT. No.E600020
  • CAS. No.362-05-0
  • Mol. F.C18H24O3
  • Mol. W.288.38 g/mol
  • Stock Status:Custom Synthesis
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4-Hydroxyestradiol
4-Hydroxyestradiol
  • CAT. No.E600021
  • CAS. No.5976-61-4
  • Mol. F.C18H24O3
  • Mol. W.288.38 g/mol
  • Stock Status:Custom Synthesis
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Estriol 3-sulfate
Estriol 3-sulfate
  • CAT. No.E600025
  • CAS. No.481-95-8
  • Mol. F.C1H24O6S
  • Mol. W.368.44 g/mol
  • Stock Status:Please Enquire
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Isotope Labelled Compounds

Estetrol D3
Estetrol D3
  • CAT. No.E600001
  • CAS. No.NA
  • Mol. F.C18H21D3O4
  • Mol. W.307.40 g/mol
  • Stock Status:Custom Synthesis
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