A natural steroidal estrogen, Estriol is also known as 16α-hydroxyestradiol. It is used as a hormone replacement therapy in menopausal symptoms. It is produced by the ovaries during pregnancy. It is an agonist of both of the estrogen receptors (ER), ERα and ERβ. Reference standards of Estriol API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.
17-epi-Estradiol
Catalogue No.:PA 05 19540
CAS :
Molecular Formula : C18H24O2
Molecular Weight : 272.38
Estriol
Catalogue No.:PA 05 21000
Molecular Formula : C18H24O3
Molecular Weight : 288.38
9,11-Didehydroestriol
Catalogue No.:PA 05 21010
Molecular Formula : C18H22O3
Molecular Weight : 286.37
Estrone
Catalogue No.:PA 05 21020
Molecular Formula : C18H22O2
Molecular Weight : 270.37
Estriol 3-Methyl Ether
Catalogue No.:PA 05 21030
Molecular Formula : C19H26O3
Molecular Weight : 302.41
Estradiol
Catalogue No.:PA 05 21040
17-epi-Estriol
Catalogue No.:PA 05 21050
16-Epi-estriol
Catalogue No.:PA 05 21060
Estrone Acetate
Catalogue No.:PA 05 21110
Molecular Formula : C20H24O3
Molecular Weight : 312.40
Estriol 3-Succinate
Catalogue No.:PA 05 21510
Molecular Formula : C22H28O6
Molecular Weight : 388.45
Estriol Trisulfate Trisodium Salt
Catalogue No.:PA 05 21520
Molecular Formula : C18H21Na3O12S3
Molecular Weight : 594.52
Estriol Tri-(2,2,2-trichloroethyl)sulfate
Catalogue No.:PA 05 21530
Molecular Formula : C24H27Cl9O12S3
Molecular Weight : 922.74
17-Iodo-3-O-methyl Estratetraenol
Catalogue No.:PA 05 21540
Molecular Formula : C19H23IO
Molecular Weight : 394.29
3-O-Methyl Estrone Hydrazone
Catalogue No.:PA 05 21550
Molecular Formula : C19H26N2O
Molecular Weight : 298.42
3-O-Methyl 6-Hydroxy-17β-estradiol 17-O-Tetrahydropyran
Catalogue No.:PA 05 21560
Molecular Formula : C24H34O4
Molecular Weight : 386.52
3-O-Benzyl Estriol
Catalogue No.:PA 05 21570
Molecular Formula : C25H30O3
Molecular Weight : 378.5
2-Methoxy 17β-Estradiol
Catalogue No.:PA 05 21580
1,3,5(10)-Estratrien-2,3,4,17beta-tetrol-2,4-dimethyl Ether
Catalogue No.:PA 05 21590
Molecular Formula : C20H28O4
Molecular Weight : 332.43
3,16α-Dihydroxyestra-1,3,5(10)-trien-17-one
Catalogue No.:PA 05 22620
3-O-Benzyl Estriol-d1
Catalogue No.:PA STI 011420
Molecular Formula : C25H29DO3
Molecular Weight : 379.51
Estriol (E1680000)
Catalogue No.:PA EPE1680000
Molecular Formula : NA
Molecular Weight : NA
Estriol impurity A (E1680005)
Catalogue No.:PA EPE1680005
Estriol (JP 0076)
Catalogue No.:PA JP0076
Estriol (1254508)
Catalogue No.:PA USP1254508
estriol (752RB)
Catalogue No.:PA BP752RB
estriol impurity standard (753RB)
Catalogue No.:PA BP753RB
Catalogue No.:PAI 05 007010
Molecular Formula : C24H30O6
Molecular Weight : 414.50
Catalogue No.:PAI 05 007020
Molecular Formula : C24H30O7
Molecular Weight : 430.50
16,17-epi-Estriol
Catalogue No.:PA 05 21070
Molecular Weight : 288.39
3-Hydroxy-17-oxa-D-homoestra-1,3,5(10)-trien-17a-one
Catalogue No.:PA 05 21090
Estrone b-D-glucuronide
Catalogue No.:PA 05 0211000
Molecular Formula : C24H30O8
Molecular Weight : 446.50
Estriol Succinate
Catalogue No.:PA 05 0211001
Molecular Formula : C26H32O9
Molecular Weight : 488.53
4-HYDROXYESTRADIOL
Catalogue No.:PA 05 0211002
2-HYDROXYESTRADIOL
Catalogue No.:PA 05 0211003
4-Methoxyestradiol
Catalogue No.:PA 05 0211004
2-Hydroxy estrone
Catalogue No.:PA 05 0211005
4-Hydroxy Estrone
Catalogue No.:PA 05 0211006
6alpha-Hydroxyestriol
Catalogue No.:PA 05 0211007
Molecular Formula : C18H24O4
Molecular Weight : 304.39
Estriol 16,17-Diacetate
Catalogue No.:PA 05 0211008
Molecular Formula : C22H28O5
Molecular Weight : 372.46
6-Oxoestriol
Catalogue No.:PA 05 0211009
Molecular Formula : C18H22O4
Molecular Weight : 302.37
10,17β-Dihydroxy-estra-1,4-dien-3-one
Catalogue No.:PA 05 0211010
(17β)-3,17-Bis[(tetrahydro-2H-pyran-2-yl)oxy]-estra-1,3,5(10)-trien-6-ol (Mixture of Diasteromers)
Catalogue No.:PA 05 0211011
Molecular Formula : C28H40O5
Molecular Weight : 456.62
2-Methylestrone
Catalogue No.:PA 05 0211012
Molecular Formula : C19H24O2
Molecular Weight : 284.4
Estriol-D2
Catalogue No.:PA STI 089280
Molecular Formula : C18H22D2O3
Molecular Weight : 290.4
Estetrol
Catalogue No.:PA 05 0211013
15,16-Deshydroxy 3-O-Benzyl Estetrol 17-Acetate
Catalogue No.:PA 05 0211014
Molecular Formula : C27H30O3
Molecular Weight : 402.53
3-O-Benzyl Estetrol 17-Acetate
Catalogue No.:PA 05 0211015
Molecular Formula : C27H32O5
Molecular Weight : 436.55
Estetrol 17-Acetate
Catalogue No.:PA 05 0211016
Molecular Formula : C20H26O5
Molecular Weight : 346.42
2,4-Dibromo Estetrol
Catalogue No.:PA 05 0211017
Molecular Formula : C18H22Br2O4
Molecular Weight : 462.18
Estetrol Monohydrate
Catalogue No.:PA 05 0211018
Molecular Formula : C18H26O5
Molecular Weight : 322.4
(8R,9S,13S,14S,15R,16R,17R)-2,4-Dibromo-3,15,16-trihydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl acetate
Catalogue No.:PA 05 0211019
Molecular Formula : C20H24Br2O5
Molecular Weight : 504.22
Estriol 16α-(β-D-Glucuronide) Sodium Salt
Catalogue No.:PA 05 0211020
Molecular Formula : C24H32NaO9
Molecular Weight : 487.5
(8R,9S,13S,14S,15R,16R,17R)-3-(Benzyloxy)-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene-15,16,17-triol
Catalogue No.:PA 05 0211021
Molecular Formula : C25H30O4
Molecular Weight : 394.51
6-Oxo-Estetrol
Catalogue No.:PA 05 0211022
Molecular Formula : C18H22O5
Molecular Weight : 318.37
(8R,9S,13S,14S,15S,16S,17R)-13-Methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene-3,15,16,17-tetraol
Catalogue No.:PA 05 0211023
(8R,9S,13S,17R)-3,15,17-Trihydroxy-13-methyl-6,7,8,9,11,12,13,17-octahydro-16H-cyclopenta[a]phenanthren-16-one
Catalogue No.:PA 05 0211024
Molecular Formula : C18H20O4
Molecular Weight : 300.35
(8R,9S,13R)-3,15-Dihydroxy-13-methyl-6,7,8,9,11,12,13,17-octahydro-16H-cyclopenta[a]phenanthren-16-one
Catalogue No.:PA 05 0211025
Molecular Formula : C18H20O3
Molecular Weight : 284.36
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