Estrogen Related Compounds & Impurities

Oestrogen refers to the class of primary female sex hormones; reference standards support quality control of hormonal pharmaceutical preparations.

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 Estrogen reference standards, pharmacopeial and non-pharmacopeial Estrogen 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 Estrogen-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

Estrogen
Estrogen
  • CAT. No.E700000
  • CAS. No.12126-59-9
  • Mol. F.C18H19NaO5S
  • Mol. W.370.40 g/mol
  • Stock Status:Limited Stock
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17alpha-Dihydro Equilin 3-Sulfate Sodium Salt
17alpha-Dihydro Equilin 3-Sulfate Sodium Salt
  • CAT. No.E700001
  • CAS. No.56050-05-6
  • Mol. F.C18H21NaO5S
  • Mol. W.372.41 g/mol
  • Stock Status:Custom Synthesis
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Equilin
Equilin
  • CAT. No.E700002
  • CAS. No.474-86-2
  • Mol. F.C18H20O2
  • Mol. W.268.35 g/mol
  • Stock Status:Instock
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17alpha-Dihydro Equilin
17alpha-Dihydro Equilin
  • CAT. No.E700003
  • CAS. No.651-55-8
  • Mol. F.C18H22O2
  • Mol. W.270.37 g/mol
  • Stock Status:Under Synthesis
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Delta8,9-Dehydro Estrone 3-Sulfate Sodium Salt
Delta8,9-Dehydro Estrone 3-Sulfate Sodium Salt
  • CAT. No.E700004
  • CAS. No.61612-83-7
  • Mol. F.C18H19NaO5S
  • Mol. W.370.40 g/mol
  • Stock Status:Custom Synthesis
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Equilenin Sulfate Sodium
Equilenin Sulfate Sodium
  • CAT. No.E700005
  • CAS. No.16680-48-1
  • Mol. F.C18H17NaO5S
  • Mol. W.368.38 g/mol
  • Stock Status:Custom Synthesis
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17alpha-Estradiol Sodium Sulfate
17alpha-Estradiol Sodium Sulfate
  • CAT. No.E700006
  • CAS. No.56050-04-5
  • Mol. F.C18H23NaO5S
  • Mol. W.374.43 g/mol
  • Stock Status:Custom Synthesis
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17beta-Dihydroequilin Sodium Sulfate
17beta-Dihydroequilin Sodium Sulfate
  • CAT. No.E700008
  • CAS. No.16680-49-2
  • Mol. F.C18H21NaO5S
  • Mol. W.372.41 g/mol
  • Stock Status:Custom Synthesis
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17a-Dihydroequilenin Sodium Sulfate
17a-Dihydroequilenin Sodium Sulfate
  • CAT. No.E700009
  • CAS. No.56086-66-9
  • Mol. F.C18H19NaO5S
  • Mol. W.370.39 g/mol
  • Stock Status:Custom Synthesis
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17beta-Dihydroequilenin Sodium Sulfate
17beta-Dihydroequilenin Sodium Sulfate
  • CAT. No.E700010
  • CAS. No.16680-50-5
  • Mol. F.C18H19NaO5S
  • Mol. W.370.42 g/mol
  • Stock Status:Custom Synthesis
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10-Beta-Hydroxyestr-4-Ene-3,17-Dione
10-Beta-Hydroxyestr-4-Ene-3,17-Dione
  • CAT. No.E700011
  • CAS. No.5189-96-8
  • Mol. F.C18H24O3
  • Mol. W.288.38 g/mol
  • Stock Status:Custom Synthesis
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17beta-Dihydro Equilin
17beta-Dihydro Equilin
  • CAT. No.E700016
  • CAS. No.3563-27-7
  • Mol. F.C18H22O2
  • Mol. W.270.37 g/mol
  • Stock Status:Instock
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Estrone 3-Sulfate Sodium Salt
Estrone 3-Sulfate Sodium Salt
  • CAT. No.E700017
  • CAS. No.438-67-5
  • Mol. F.C18H21NaO5S
  • Mol. W.372.41 g/mol
  • Stock Status:Instock
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Equilin 3-Sulfate Sodium Salt
Equilin 3-Sulfate Sodium Salt
  • CAT. No.E700018
  • CAS. No.16680-47-0
  • Mol. F.C18H19NaO5S
  • Mol. W.370.40 g/mol
  • Stock Status:Limited Stock
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17alpha-Dihydro Equilenin
17alpha-Dihydro Equilenin
  • CAT. No.E700020
  • CAS. No.6639-99-2
  • Mol. F.C18H20O2
  • Mol. W.268.35 g/mol
  • Stock Status:Custom Synthesis
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Delta8,9-Dehydro Estrone
Delta8,9-Dehydro Estrone
  • CAT. No.E700021
  • CAS. No.474-87-3
  • Mol. F.C18H20O2
  • Mol. W.268.35 g/mol
  • Stock Status:Custom Synthesis
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Equilin Glucuronide
Equilin Glucuronide
  • CAT. No.E700022
  • CAS. No.76663-60-0
  • Mol. F.C24H28O8
  • Mol. W.444.47 g/mol
  • Stock Status:Custom Synthesis
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Equilin 3-O-beta-D-Glucuronide Sodium Salt
Equilin 3-O-beta-D-Glucuronide Sodium Salt
  • CAT. No.E700023
  • CAS. No.27610-12-4
  • Mol. F.C24H27NaO8
  • Mol. W.466.46 g/mol
  • Stock Status:Limited Stock
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Sodium(17R)-6,17-dihydroxy-13-methyl-12,13,14,15,16,17-hexahydro-11H-cyclopenta[a]phenanthren-3-yl sulfate
Sodium(17R)-6,17-dihydroxy-13-methyl-12,13,14,15,16,17-hexahydro-11H-cyclopenta[a]phenanthren-3-yl sulfate
  • CAT. No.E700028
  • CAS. No.NA
  • Mol. F.C18H19NaO6S
  • Mol. W.386.39 g/mol
  • Stock Status:Custom Synthesis
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Sodium-6-hydroxy-13-methyl-17-oxo-12,13,14,15,16,17-hexahydro-11H-cyclopenta[a]phenanthren-3-yl sulfate
Sodium-6-hydroxy-13-methyl-17-oxo-12,13,14,15,16,17-hexahydro-11H-cyclopenta[a]phenanthren-3-yl sulfate
  • CAT. No.E700029
  • CAS. No.NA
  • Mol. F.C18H17NaO6S
  • Mol. W.384.38 g/mol
  • Stock Status:Custom Synthesis
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6-Hydroxy 17alpha-dihydroequilenin sulfate
6-Hydroxy 17alpha-dihydroequilenin sulfate
  • CAT. No.E700030
  • CAS. No.NA
  • Mol. F.C18H20O6S
  • Mol. W.364.41 g/mol
  • Stock Status:Custom Synthesis
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6-Hydroxy Equilenin Sulfate
6-Hydroxy Equilenin Sulfate
  • CAT. No.E700031
  • CAS. No.NA
  • Mol. F.C18H18O6S
  • Mol. W.362.40 g/mol
  • Stock Status:Custom Synthesis
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Estrone Sulphate
Estrone Sulphate
  • CAT. No.E700036
  • CAS. No.481-97-0
  • Mol. F.C18H22O5S
  • Mol. W.350.43 g/mol
  • Stock Status:Custom Synthesis
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(2S,3S,4S,5R,6R)-6-(((1S,3S,9S,13S,14S,17R)-1,3-Dihydroxy-13-methyl-2,3,4,6,9,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta(a)phenanthren-17-yl)oxy)-3,4,5-trihydroxytetrahydro-2H-pyran-2-carboxylic Acid
(2S,3S,4S,5R,6R)-6-(((1S,3S,9S,13S,14S,17R)-1,3-Dihydroxy-13-methyl-2,3,4,6,9,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta(a)phenanthren-17-yl)oxy)-3,4,5-trihydroxytetrahydro-2H-pyran-2-carboxylic Acid
  • CAT. No.E700037
  • CAS. No.NA
  • Mol. F.C24H34O9
  • Mol. W.466.52 g/mol
  • Stock Status:Custom Synthesis
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Lauroside A
Lauroside A
  • CAT. No.E700038
  • CAS. No.820259-65-2
  • Mol. F.C19H32O8
  • Mol. W.388.50 g/mol
  • Stock Status:Custom Synthesis
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Lauroside B
Lauroside B
  • CAT. No.E700039
  • CAS. No.820260-23-9
  • Mol. F.C19H32O9
  • Mol. W.404.50 g/mol
  • Stock Status:Custom Synthesis
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Lauroside E
Lauroside E
  • CAT. No.E700040
  • CAS. No.917751-02-1
  • Mol. F.C19H32O8
  • Mol. W.388.50 g/mol
  • Stock Status:Custom Synthesis
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Isotope Labelled Compounds

Equilin D4
Equilin D4
  • CAT. No.E700019
  • CAS. No.285979-79-5
  • Mol. F.C18H16D4O2
  • Mol. W.272.37 g/mol
  • Stock Status:Custom Synthesis
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Estrone 3-Sulfate-d5 Sodium Salt
Estrone 3-Sulfate-d5 Sodium Salt
  • CAT. No.E700024
  • CAS. No.438-67-5(unlabelled)
  • Mol. F.C18H16D5NaO5S
  • Mol. W.377.44 g/mol
  • Stock Status:Custom Synthesis
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Estrone-O-beta-D-Glucuronide-d4
Estrone-O-beta-D-Glucuronide-d4
  • CAT. No.E700025
  • CAS. No.870061-18-0
  • Mol. F.C24H26D4O8
  • Mol. W.450.51 g/mol
  • Stock Status:Instock
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Sodium Equilin-2,4,16,16-d4 Sulfate (stabilized with TRIS, 50% w/w)
Sodium Equilin-2,4,16,16-d4 Sulfate (stabilized with TRIS, 50% w/w)
  • CAT. No.E700026
  • CAS. No.285979-81-9
  • Mol. F.C18H15D4NaO5S
  • Mol. W.374.42 g/mol
  • Stock Status:Custom Synthesis
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