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Pharmaceutical Reference Standards

Estradiol Valerate

Picture of Estradiol Valerate
CAT No: SZ-E005001
CAS No: 979-32-8
Mol.F. : C23H32O3
Mol.Wt. : 356.4
Inv. Status: In Stock
SZ-E005001
CAS No:979-32-8
Mol.F.: C23H32O3
Mol.Wt.: 356.4
Inv. Status: In Stock

Estradiol Valerate EP Impurity B

Picture of Estradiol Valerate EP Impurity B
CAT No: SZ-E005003
CAS No: 21881-45-8
Mol.F. : C23H32O3
Mol.Wt. : 356.5
Inv. Status: In Stock
SZ-E005003
CAS No:21881-45-8
Mol.F.: C23H32O3
Mol.Wt.: 356.5
Inv. Status: In Stock

Estradiol Valerate EP Impurity C

Picture of Estradiol Valerate EP Impurity C
CAT No: SZ-E005004
CAS No: 95959-20-9
Mol.F. : C23H30O3
Mol.Wt. : 354.4
Inv. Status: In Stock
SZ-E005004
CAS No:95959-20-9
Mol.F.: C23H30O3
Mol.Wt.: 354.4
Inv. Status: In Stock

Estradiol Valerate EP Impurity D

Picture of Estradiol Valerate EP Impurity D
CAT No: SZ-E005005
CAS No: 1359847-37-2
Mol.F. : C24H34O3
Mol.Wt. : 370.5
Inv. Status: In Stock
SZ-E005005
CAS No:1359847-37-2
Mol.F.: C24H34O3
Mol.Wt.: 370.5
Inv. Status: In Stock

Estradiol Valerate EP Impurity E

Picture of Estradiol Valerate EP Impurity E
CAT No: SZ-E005006
CAS No: 63042-28-4
Mol.F. : C28H40O4
Mol.Wt. : 440.6
Inv. Status: In Stock
SZ-E005006
CAS No:63042-28-4
Mol.F.: C28H40O4
Mol.Wt.: 440.6
Inv. Status: In Stock

Estradiol Valerate EP Impurity F

Picture of Estradiol Valerate EP Impurity F
CAT No: SZ-E005007
CAS No: 18069-79-9
Mol.F. : C22H30O3
Mol.Wt. : 342.4
Inv. Status: In Stock
SZ-E005007
CAS No:18069-79-9
Mol.F.: C22H30O3
Mol.Wt.: 342.4
Inv. Status: In Stock

Estradiol Valerate EP Impurity G

Picture of Estradiol Valerate EP Impurity G
CAT No: SZ-E005008
CAS No: 1313382-25-0
Mol.F. : C23H30O3
Mol.Wt. : 354.4
Inv. Status: In Stock
SZ-E005008
CAS No:1313382-25-0
Mol.F.: C23H30O3
Mol.Wt.: 354.4
Inv. Status: In Stock

Estradiol Valerate EP Impurity H

Picture of Estradiol Valerate EP Impurity H
CAT No: SZ-E005009
CAS No: 1421283-56-8
Mol.F. : C28H40O4
Mol.Wt. : 440.6
Inv. Status: In Stock
SZ-E005009
CAS No:1421283-56-8
Mol.F.: C28H40O4
Mol.Wt.: 440.6
Inv. Status: In Stock

Estradiol Valerate EP Impurity I

Picture of Estradiol Valerate EP Impurity I
CAT No: SZ-E005010
CAS No: NA
Mol.F. : C49H66O5
Mol.Wt. : 735.1
Inv. Status: Custom Synthesis
SZ-E005010
CAS No:NA
Mol.F.: C49H66O5
Mol.Wt.: 735.1
Inv. Status: Custom Synthesis

Estradiol Valerate EP Impurity J

Picture of Estradiol Valerate EP Impurity J
CAT No: SZ-E005011
CAS No: NA
Mol.F. : C24H34O3
Mol.Wt. : 370.5
Inv. Status: In Stock
SZ-E005011
CAS No:NA
Mol.F.: C24H34O3
Mol.Wt.: 370.5
Inv. Status: In Stock

6β-Hydroxy-17β-Estradiol 17-Valerate

Picture of 6β-Hydroxy-17β-Estradiol 17-Valerate
CAT No: SZ-E005012
CAS No: 1313382-32-9
Mol.F. : C23H32O4
Mol.Wt. : 372.5
Inv. Status: In Stock
SZ-E005012
CAS No:1313382-32-9
Mol.F.: C23H32O4
Mol.Wt.: 372.5
Inv. Status: In Stock

6α-Hydroxy-17β-Estradiol 17-Valerate

Picture of 6α-Hydroxy-17β-Estradiol 17-Valerate
CAT No: SZ-E005013
CAS No: 1313382-26-1
Mol.F. : C23H32O4
Mol.Wt. : 372.5
Inv. Status: In Stock
SZ-E005013
CAS No:1313382-26-1
Mol.F.: C23H32O4
Mol.Wt.: 372.5
Inv. Status: In Stock

6-Keto Estradiol Valerate Impurity

Picture of 6-Keto Estradiol Valerate Impurity
CAT No: SZ-E005014
CAS No: 1313382-51-2
Mol.F. : C23H30O4
Mol.Wt. : 370.5
Inv. Status: In Stock
SZ-E005014
CAS No:1313382-51-2
Mol.F.: C23H30O4
Mol.Wt.: 370.5
Inv. Status: In Stock

Estradiol Valerate Impurity 1

Picture of Estradiol Valerate Impurity 1
CAT No: SZ-E005015
CAS No: NA
Mol.F. : C23H28O4
Mol.Wt. : 368.5
Inv. Status: Custom Synthesis
SZ-E005015
CAS No:NA
Mol.F.: C23H28O4
Mol.Wt.: 368.5
Inv. Status: Custom Synthesis

Estradiol Valerate Impurity 2

Picture of Estradiol Valerate Impurity 2
CAT No: SZ-E005016
CAS No: NA
Mol.F. : C23H30O4
Mol.Wt. : 370.5
Inv. Status: Custom Synthesis
SZ-E005016
CAS No:NA
Mol.F.: C23H30O4
Mol.Wt.: 370.5
Inv. Status: Custom Synthesis

6-Beta Hydroxyestradiol

Picture of 6-Beta Hydroxyestradiol
CAT No: SZ-E031014
CAS No: 3583-03-7
Mol.F. : C18H24O3
Mol.Wt. : 288.4
Inv. Status: In Stock
SZ-E031014
CAS No:3583-03-7
Mol.F.: C18H24O3
Mol.Wt.: 288.4
Inv. Status: In Stock

Estradiol USP Related Compound C 

Picture of Estradiol USP Related Compound C 
CAT No: SZ-E031015
CAS No: 571-92-6
Mol.F. : C18H22O3
Mol.Wt. : 286.4
Inv. Status: In Stock
SZ-E031015
CAS No:571-92-6
Mol.F.: C18H22O3
Mol.Wt.: 286.4
Inv. Status: In Stock

6-Alpha Hydroxyestradiol

Picture of 6-Alpha Hydroxyestradiol
CAT No: SZ-E031016
CAS No: 1229-24-9
Mol.F. : C18H24O3
Mol.Wt. : 288.4
Inv. Status: In Stock
SZ-E031016
CAS No:1229-24-9
Mol.F.: C18H24O3
Mol.Wt.: 288.4
Inv. Status: In Stock

Estradiol USP Related Compound B

Picture of Estradiol USP Related Compound B
CAT No: SZ-E031017
CAS No: 7291-41-0
Mol.F. : C18H22O2
Mol.Wt. : 270.4
Inv. Status: In Stock
SZ-E031017
CAS No:7291-41-0
Mol.F.: C18H22O2
Mol.Wt.: 270.4
Inv. Status: In Stock

Estrone Acetate

Picture of Estrone Acetate
CAT No: SZ-E031018
CAS No: 901-93-9
Mol.F. : C20H24O3
Mol.Wt. : 312.4
Inv. Status: In Stock
SZ-E031018
CAS No:901-93-9
Mol.F.: C20H24O3
Mol.Wt.: 312.4
Inv. Status: In Stock

Estradiol Acetate

Picture of Estradiol Acetate
CAT No: SZ-E031019
CAS No: 4245-41-4
Mol.F. : C20H26O3
Mol.Wt. : 314.4
Inv. Status: In Stock
SZ-E031019
CAS No:4245-41-4
Mol.F.: C20H26O3
Mol.Wt.: 314.4
Inv. Status: In Stock

β-Estradiol 17-Acetate

Picture of β-Estradiol 17-Acetate
CAT No: SZ-E031020
CAS No: 1743-60-8
Mol.F. : C20H26O3
Mol.Wt. : 314.4
Inv. Status: In Stock
SZ-E031020
CAS No:1743-60-8
Mol.F.: C20H26O3
Mol.Wt.: 314.4
Inv. Status: In Stock

β-Estradiol 3,17-Diacetate

Picture of β-Estradiol 3,17-Diacetate
CAT No: SZ-E031021
CAS No: 3434-88-6
Mol.F. : C22H28O4
Mol.Wt. : 356.5
Inv. Status: In Stock
SZ-E031021
CAS No:3434-88-6
Mol.F.: C22H28O4
Mol.Wt.: 356.5
Inv. Status: In Stock

Estradiol Dienanthate

Picture of Estradiol Dienanthate
CAT No: SZ-E031022
CAS No: NA
Mol.F. : C32H48O4
Mol.Wt. : 496.7
Inv. Status: In Stock
SZ-E031022
CAS No:NA
Mol.F.: C32H48O4
Mol.Wt.: 496.7
Inv. Status: In Stock

1-Methylestrone

Picture of 1-Methylestrone
CAT No: SZ-E031024
CAS No: 4011-48-7
Mol.F. : C19H24O2
Mol.Wt. : 284.4
Inv. Status: In Stock
SZ-E031024
CAS No:4011-48-7
Mol.F.: C19H24O2
Mol.Wt.: 284.4
Inv. Status: In Stock

17α-Estradiol Sulfate Sodium Salt

Picture of 17α-Estradiol Sulfate Sodium Salt
CAT No: SZ-E031025
CAS No: 56050-04-5
Mol.F. : C18H23O5S : Na
Mol.Wt. : 351.4 : 23.0
Inv. Status: In Stock
Rel. CAS No : 22139-70-4 (free base)
SZ-E031025
CAS No:56050-04-5
Mol.F.: C18H23O5S : Na
Mol.Wt.: 351.4 : 23.0
Inv. Status: In Stock
Rel. CAS No : 22139-70-4 (free base)

Sodium 17β-Estradiol 3-O-Sulfate

Picture of Sodium 17β-Estradiol 3-O-Sulfate
CAT No: SZ-E031026
CAS No: 4999-79-5
Mol.F. : C18H23O5S : Na
Mol.Wt. : 351.4 : 23.0
Inv. Status: In Stock
Rel. CAS No : 481-96-9 (free base)
SZ-E031026
CAS No:4999-79-5
Mol.F.: C18H23O5S : Na
Mol.Wt.: 351.4 : 23.0
Inv. Status: In Stock
Rel. CAS No : 481-96-9 (free base)

Promestriene

Picture of Promestriene
CAT No: SZ-E031027
CAS No: 39219-28-8
Mol.F. : C22H32O2
Mol.Wt. : 328.5
Inv. Status: In Stock
SZ-E031027
CAS No:39219-28-8
Mol.F.: C22H32O2
Mol.Wt.: 328.5
Inv. Status: In Stock

Delta-9,11-Promestriene

Picture of Delta-9,11-Promestriene
CAT No: SZ-E031028
CAS No: 2575516-67-3
Mol.F. : C22H30O2
Mol.Wt. : 326.5
Inv. Status: In Stock
SZ-E031028
CAS No:2575516-67-3
Mol.F.: C22H30O2
Mol.Wt.: 326.5
Inv. Status: In Stock

Estradiol Dimer Impurity

Picture of Estradiol Dimer Impurity
CAT No: SZ-E031029
CAS No: NA
Mol.F. : C36H46O4
Mol.Wt. : 542.8
Inv. Status: In Stock
SZ-E031029
CAS No:NA
Mol.F.: C36H46O4
Mol.Wt.: 542.8
Inv. Status: In Stock

Estradiol Dimer Impurity 1

Picture of Estradiol Dimer Impurity 1
CAT No: SZ-E031030
CAS No: NA
Mol.F. : C47H55N7O4
Mol.Wt. : 782.0
Inv. Status: Custom Synthesis
SZ-E031030
CAS No:NA
Mol.F.: C47H55N7O4
Mol.Wt.: 782.0
Inv. Status: Custom Synthesis

3-O-Methyl Estradiol Dimer

Picture of 3-O-Methyl Estradiol Dimer
CAT No: SZ-E031031
CAS No: NA
Mol.F. : C49H59N7O4
Mol.Wt. : 810.1
Inv. Status: Custom Synthesis
SZ-E031031
CAS No:NA
Mol.F.: C49H59N7O4
Mol.Wt.: 810.1
Inv. Status: Custom Synthesis

Estradiol Dimer 1

Picture of Estradiol Dimer 1
CAT No: SZ-E031032
CAS No: NA
Mol.F. : C36H46O4
Mol.Wt. : 542.8
Inv. Status: Custom Synthesis
SZ-E031032
CAS No:NA
Mol.F.: C36H46O4
Mol.Wt.: 542.8
Inv. Status: Custom Synthesis

Estradiol Dimer 2

Picture of Estradiol Dimer 2
CAT No: SZ-E031033
CAS No: NA
Mol.F. : C36H46O4
Mol.Wt. : 542.8
Inv. Status: In Stock
SZ-E031033
CAS No:NA
Mol.F.: C36H46O4
Mol.Wt.: 542.8
Inv. Status: In Stock

Estradiol Impurity 1

Picture of Estradiol Impurity 1
CAT No: SZ-E031034
CAS No: 41460-44-0
Mol.F. : C26H36O3
Mol.Wt. : 396.6
Inv. Status: In Stock
SZ-E031034
CAS No:41460-44-0
Mol.F.: C26H36O3
Mol.Wt.: 396.6
Inv. Status: In Stock

Estradiol Dicypionate

Picture of Estradiol Dicypionate
CAT No: SZ-E031035
CAS No: 633-36-3
Mol.F. : C34H48O4
Mol.Wt. : 520.8
Inv. Status: In Stock
SZ-E031035
CAS No:633-36-3
Mol.F.: C34H48O4
Mol.Wt.: 520.8
Inv. Status: In Stock

4-Methylestradiol Cypionate

Picture of 4-Methylestradiol Cypionate
CAT No: SZ-E031036
CAS No: NA
Mol.F. : C27H38O3
Mol.Wt. : 410.6
Inv. Status: In Stock
SZ-E031036
CAS No:NA
Mol.F.: C27H38O3
Mol.Wt.: 410.6
Inv. Status: In Stock

∆8,9-Dehydro-17β-Estradiol

Picture of ∆8,9-Dehydro-17β-Estradiol
CAT No: SZ-E031037
CAS No: 23392-54-3
Mol.F. : C18H22O2
Mol.Wt. : 270.4
Inv. Status: Custom Synthesis
SZ-E031037
CAS No:23392-54-3
Mol.F.: C18H22O2
Mol.Wt.: 270.4
Inv. Status: Custom Synthesis

Estradiol-9-Ene Cypionate

Picture of Estradiol-9-Ene Cypionate
CAT No: SZ-E031038
CAS No: NA
Mol.F. : C26H34O3
Mol.Wt. : 394.6
Inv. Status: In Stock
SZ-E031038
CAS No:NA
Mol.F.: C26H34O3
Mol.Wt.: 394.6
Inv. Status: In Stock

Estradiol Impurity 2

Picture of Estradiol Impurity 2
CAT No: SZ-E031039
CAS No: NA
Mol.F. : C19H26O2
Mol.Wt. : 286.4
Inv. Status: Custom Synthesis
SZ-E031039
CAS No:NA
Mol.F.: C19H26O2
Mol.Wt.: 286.4
Inv. Status: Custom Synthesis

Estradiol Impurity 3

Picture of Estradiol Impurity 3
CAT No: SZ-E031040
CAS No: NA
Mol.F. : C18H24O3
Mol.Wt. : 288.4
Inv. Status: Custom Synthesis
SZ-E031040
CAS No:NA
Mol.F.: C18H24O3
Mol.Wt.: 288.4
Inv. Status: Custom Synthesis

Estradiol Impurity 4

Picture of Estradiol Impurity 4
CAT No: SZ-E031041
CAS No: 57780-81-1
Mol.F. : C18H24O4
Mol.Wt. : 304.4
Inv. Status: Custom Synthesis
SZ-E031041
CAS No:57780-81-1
Mol.F.: C18H24O4
Mol.Wt.: 304.4
Inv. Status: Custom Synthesis

2-Methoxy 17β-Estradiol

Picture of 2-Methoxy 17β-Estradiol
CAT No: SZ-E031042
CAS No: 362-07-2
Mol.F. : C19H26O3
Mol.Wt. : 302.4
Inv. Status: Custom Synthesis
SZ-E031042
CAS No:362-07-2
Mol.F.: C19H26O3
Mol.Wt.: 302.4
Inv. Status: Custom Synthesis

Estradiol 17-Hexanoate

Picture of Estradiol 17-Hexanoate
CAT No: SZ-E031043
CAS No: 71764-18-6
Mol.F. : C24H34O3
Mol.Wt. : 370.5
Inv. Status: Custom Synthesis
SZ-E031043
CAS No:71764-18-6
Mol.F.: C24H34O3
Mol.Wt.: 370.5
Inv. Status: Custom Synthesis

Stable Isotopes and Metabolites

Δ9,11-Estradiol-d3

Picture of Δ9,11-Estradiol-d3
CAT No: SZ-E031D01
CAS No: NA
Mol.F. : C18H19D3O2
Mol.Wt. : 273.4
Inv. Status: In Stock
Rel. CAS No : 791-69-5 (unlabeled)
SZ-E031D01
CAS No:NA
Mol.F.: C18H19D3O2
Mol.Wt.: 273.4
Inv. Status: In Stock
Rel. CAS No : 791-69-5 (unlabeled)

Estradiol D4

Picture of Estradiol D4
CAT No: SZ-E031D02
CAS No: 66789-03-5
Mol.F. : C18H20D4O2
Mol.Wt. : 276.4
Inv. Status: Custom Synthesis
SZ-E031D02
CAS No:66789-03-5
Mol.F.: C18H20D4O2
Mol.Wt.: 276.4
Inv. Status: Custom Synthesis

Estradiol-D3

Picture of Estradiol-D3
CAT No: SZ-E031D03
CAS No: 79037-37-9
Mol.F. : C18H21D3O2
Mol.Wt. : 275.4
Inv. Status: Custom Synthesis
SZ-E031D03
CAS No:79037-37-9
Mol.F.: C18H21D3O2
Mol.Wt.: 275.4
Inv. Status: Custom Synthesis

17β-Estradiol-3-β-D-Glucuronide-D3 

Picture of 17β-Estradiol-3-β-D-Glucuronide-D3 
CAT No: SZ-E031D04
CAS No: 1260231-06-8
Mol.F. : C24H29D3O8
Mol.Wt. : 451.5
Inv. Status: Custom Synthesis
Rel. CAS No : 15270-30-1 (unlabeled)
SZ-E031D04
CAS No:1260231-06-8
Mol.F.: C24H29D3O8
Mol.Wt.: 451.5
Inv. Status: Custom Synthesis
Rel. CAS No : 15270-30-1 (unlabeled)