Estriol-Impurities | Pharmaffiliates

estriol

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.

PA 05 21000

Estriol - API


  • Catalogue No.:PA 05 21000

  • CAS :

    50-27-1

  • Molecular Formula : C18H24O3

  • Molecular Weight : 288.38

PA 05 21010

Estriol - Impurity A


  • Catalogue No.:PA 05 21010

  • CAS :

    246021-20-5

  • Molecular Formula : C18H22O3

  • Molecular Weight : 286.37

PA 05 21020

Estriol - Impurity B


  • Catalogue No.:PA 05 21020

  • CAS :

    53-16-7

  • Molecular Formula : C18H22O2

  • Molecular Weight : 270.37

PA 05 21030

Estriol - Impurity C


  • Catalogue No.:PA 05 21030

  • CAS :

    1474-53-9

  • Molecular Formula : C19H26O3

  • Molecular Weight : 302.41

PA 05 21050

Estriol - Impurity E


  • Catalogue No.:PA 05 21050

  • CAS :

    1228-72-4

  • Molecular Formula : C18H24O3

  • Molecular Weight : 288.38

PA 05 21060

Estriol - Impurity F


  • Catalogue No.:PA 05 21060

  • CAS :

    547-81-9

  • Molecular Formula : C18H24O3

  • Molecular Weight : 288.38

PA 05 21110

Estriol - Impurity K


  • Catalogue No.:PA 05 21110

  • CAS :

    901-93-9

  • Molecular Formula : C20H24O3

  • Molecular Weight : 312.40

PA 05 21570

3-O-Benzyl Estriol


  • Catalogue No.:PA 05 21570

  • CAS :

    18650-87-8

  • Molecular Formula : C25H30O3

  • Molecular Weight : 378.5

PA 05 21580

2-Methoxy 17β-Estradiol


  • Catalogue No.:PA 05 21580

  • CAS :

    362-07-2

  • Molecular Formula : C19H26O3

  • Molecular Weight : 302.41

PA 05 21590

1,3,5(10)-Estratrien-2,3,4,17beta-tetrol-2,4-dimethyl Ether


  • Catalogue No.:PA 05 21590

  • CAS :

    NA

  • Molecular Formula : C20H28O4

  • Molecular Weight : 332.43

PA STI 011420

3-O-Benzyl Estriol-d1


  • Catalogue No.:PA STI 011420

  • CAS :

    NA

  • Molecular Formula : C25H29DO3

  • Molecular Weight : 379.51

PA 05 21070

Estriol - Impurity G


  • Catalogue No.:PA 05 21070

  • CAS :

    793-89-5

  • Molecular Formula : C18H24O3

  • Molecular Weight : 288.39

PA 05 0211000

Estrone b-D-glucuronide


  • Catalogue No.:PA 05 0211000

  • CAS :

    2479-90-5

  • Molecular Formula : C24H30O8

  • Molecular Weight : 446.50

PA 05 0211001

Estriol Succinate


  • Catalogue No.:PA 05 0211001

  • CAS :

    514-68-1

  • Molecular Formula : C26H32O9

  • Molecular Weight : 488.53

PA 05 0211002

4-HYDROXYESTRADIOL


  • Catalogue No.:PA 05 0211002

  • CAS :

    5976-61-4

  • Molecular Formula : C18H24O3

  • Molecular Weight : 288.39

PA 05 0211003

2-HYDROXYESTRADIOL


  • Catalogue No.:PA 05 0211003

  • CAS :

    362-05-0

  • Molecular Formula : C18H24O3

  • Molecular Weight : 288.39

PA 05 0211004

4-Methoxyestradiol


  • Catalogue No.:PA 05 0211004

  • CAS :

    26788-23-8

  • Molecular Formula : C19H26O3

  • Molecular Weight : 302.41

PA 05 0211005

2-Hydroxy estrone


  • Catalogue No.:PA 05 0211005

  • CAS :

    362-06-1

  • Molecular Formula : C18H22O3

  • Molecular Weight : 286.37

PA 05 0211006

4-Hydroxy Estrone


  • Catalogue No.:PA 05 0211006

  • CAS :

    3131-23-5

  • Molecular Formula : C18H22O3

  • Molecular Weight : 286.37

PA 05 0211007

6alpha-Hydroxyestriol


  • Catalogue No.:PA 05 0211007

  • CAS :

    7291-49-8

  • Molecular Formula : C18H24O4

  • Molecular Weight : 304.39

PA 05 0211008

Estriol 16,17-Diacetate


  • Catalogue No.:PA 05 0211008

  • CAS :

    805-26-5

  • Molecular Formula : C22H28O5

  • Molecular Weight : 372.46

PA 05 0211009

6-Ketoestriol


  • Catalogue No.:PA 05 0211009

  • CAS :

    7323-86-6

  • Molecular Formula : C18H22O4

  • Molecular Weight : 302.37

PA 05 0211010

10,17β-Dihydroxy-estra-1,4-dien-3-one


  • Catalogue No.:PA 05 0211010

  • CAS :

    549-02-0

  • Molecular Formula : C18H24O3

  • Molecular Weight : 288.39

PA 05 0211011

(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

  • CAS :

    122566-22-7

  • Molecular Formula : C28H40O5

  • Molecular Weight : 456.62

PA 05 0211012

2-Methylestrone


  • Catalogue No.:PA 05 0211012

  • CAS :

    2626-12-2

  • Molecular Formula : C19H24O2

  • Molecular Weight : 284.4