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2D Structure
Also known as: 979-32-8, Estradiol 17-valerate, Delestrogen, Estradiol valerianate, Oestradiol valerate, Estraval
Molecular Formula
C23H32O3
Molecular Weight
356.5  g/mol
InChI Key
RSEPBGGWRJCQGY-RBRWEJTLSA-N
FDA UNII
OKG364O896

The 17-beta-isomer of estradiol, an aromatized C18 steroid with hydroxyl group at 3-beta- and 17-beta-position. Estradiol-17-beta is the most potent form of mammalian estrogenic steroids.
1 2D Structure

2D Structure

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
[(8R,9S,13S,14S,17S)-3-hydroxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-17-yl] pentanoate
2.1.2 InChI
InChI=1S/C23H32O3/c1-3-4-5-22(25)26-21-11-10-20-19-8-6-15-14-16(24)7-9-17(15)18(19)12-13-23(20,21)2/h7,9,14,18-21,24H,3-6,8,10-13H2,1-2H3/t18-,19-,20+,21+,23+/m1/s1
2.1.3 InChI Key
RSEPBGGWRJCQGY-RBRWEJTLSA-N
2.1.4 Canonical SMILES
CCCCC(=O)OC1CCC2C1(CCC3C2CCC4=C3C=CC(=C4)O)C
2.1.5 Isomeric SMILES
CCCCC(=O)O[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CCC4=C3C=CC(=C4)O)C
2.2 Other Identifiers
2.2.1 UNII
OKG364O896
2.3 Synonyms
2.3.1 MeSH Synonyms

1. 17 Beta Estradiol

2. 17 Beta Oestradiol

3. 17 Beta-estradiol

4. 17 Beta-oestradiol

5. Aerodiol

6. Delestrogen

7. Estrace

8. Estraderm Tts

9. Estradiol

10. Estradiol 17 Alpha

11. Estradiol 17 Beta

12. Estradiol 17beta

13. Estradiol Anhydrous

14. Estradiol Hemihydrate

15. Estradiol Hemihydrate, (17 Alpha)-isomer

16. Estradiol Monohydrate

17. Estradiol Valeriante

18. Estradiol, (+-)-isomer

19. Estradiol, (-)-isomer

20. Estradiol, (16 Alpha,17 Alpha)-isomer

21. Estradiol, (16 Alpha,17 Beta)-isomer

22. Estradiol, (17-alpha)-isomer

23. Estradiol, (8 Alpha,17 Beta)-(+-)-isomer

24. Estradiol, (8 Alpha,17 Beta)-isomer

25. Estradiol, (9 Beta,17 Alpha)-isomer

26. Estradiol, (9 Beta,17 Beta)-isomer

27. Estradiol, Monosodium Salt

28. Estradiol, Sodium Salt

29. Estradiol-17 Alpha

30. Estradiol-17 Beta

31. Estradiol-17beta

32. Oestradiol

33. Ovocyclin

34. Progynon Depot

35. Progynon-depot

36. Progynova

37. Vivelle

2.3.2 Depositor-Supplied Synonyms

1. 979-32-8

2. Estradiol 17-valerate

3. Delestrogen

4. Estradiol Valerianate

5. Oestradiol Valerate

6. Estraval

7. Neofollin

8. Progynova

9. Femogex

10. Progynon-depot

11. Atladiol

12. Climaval

13. Deladiol

14. Duratrad

15. Estate

16. Dura-estradiol

17. Exten Strone

18. Depo Estro Med

19. Repo-estra

20. Delestrogen 4x

21. Estraval Pa

22. Estraval 2x

23. Estroval-10

24. Delahormone Unimatic

25. Pelanin

26. Depo-estro-med

27. Femogen-l.a.

28. Gynogen L.a. 20

29. Gynogen L.a. 40

30. Deladumone

31. Estradiol, 17-valerate

32. Nsc-17590

33. Component Of Ditate

34. 17-beta-estradiol 17-valerate

35. B-estradiol 17-valerate

36. Component Of Deluteval 2x

37. Estradiol 17.beta.-valerate

38. Component Of Mal-o-fem L.a

39. .beta.-estradiol 17-valerate

40. Mls000028449

41. Chebi:31561

42. Okg364o896

43. 3-hydroxy-17beta-valeroyloxyestra-1,3,5(10)-trien

44. [(8r,9s,13s,14s,17s)-3-hydroxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-17-yl] Pentanoate

45. Cyclocur

46. Gynokadin

47. Merimono

48. Nuvelle

49. Postoval

50. Primogyna

51. Ronfase

52. Smr000058346

53. Estradiol Depot

54. Primogyn-depot

55. Beta-estradiol 17-valerate

56. 17-pentanoyl-estra-1,3,5(10)-triene-3,17beta-diol

57. Gynogen L.a. 10

58. (17beta)-3-hydroxyestra-1,3,5(10)-trien-17-yl Valerate

59. Valergen

60. Estradiol 17beta-valerate

61. Estradiol Valerate (van)

62. Mfcd00056541

63. Estradioli Valeras

64. Valerate D'estradiol

65. Ccris 5571

66. Valerato De Estradiol

67. Estradioli Valeras [inn-latin]

68. Oestradiol-17b-valerate

69. Valerate D'estradiol [inn-french]

70. Einecs 213-559-2

71. Nsc 17590

72. Valerato De Estradiol [inn-spanish]

73. Altadiol

74. Pelanin Depot

75. Unii-okg364o896

76. Estradiol-valerate

77. Gynogen La

78. Deladumone (tn)

79. Ncgc00094673-01

80. (8r,9s,13s,14s,17s)-3-hydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6h-cyclopenta[a]phenanthren-17-yl Pentanoate

81. 3-hydroxy-17beta-valeroyloxyestra-1,3,5(10)-triene

82. Gynogen L.a.10

83. Estradiol Valerate [usp:inn:ban:jan]

84. St075188

85. Estradiol Valerate Icrs

86. Opera_id_444

87. Estradiol 17?-valerate

88. Dsstox_cid_3004

89. Chembl1511

90. Dsstox_rid_76827

91. Dsstox_gsid_23004

92. Schembl40563

93. Mls001146931

94. Gtpl7655

95. Dtxsid8023004

96. Estradiol Valerate [inn]

97. Estradiol Valerate [jan]

98. Estradiol Valerate [vandf]

99. Hms2232l17

100. Hms3259c12

101. Hms3715b21

102. Estradiol Valerate [mart.]

103. Bcp11918

104. Estra-1,3,5(10)-triene-3,17-diol (17-beta)-, 17-pentanoate

105. Estra-1,3,5(10)-triene-3,17-diol(17beta)-, 17-pentanoate

106. Estradiol Valerate (jan/usp/inn)

107. Estradiol Valerate [usp-rs]

108. Estradiol Valerate [who-dd]

109. Hy-b0672

110. Nsc17590

111. Zinc3881556

112. Estradiol 17-valerate [mi]

113. Tox21_111312

114. Estra-1,3,5(10)-triene-3,17-diol (17.beta.)-, 17-pentanoate

115. Lmst02010039

116. S3149

117. Akos005267158

118. Estradiol-17-valerate; 1,3,5(10)-estratriene-3,17b-diol 17-pentanote

119. Ccg-221130

120. Db13956

121. Estradiol Valerate [green Book]

122. Fd12049

123. Ks-5213

124. Nc00560

125. Estradiol Valerate [orange Book]

126. Estradiol Valerate [ep Monograph]

127. Estradiol Valerate For System Suitability

128. Ncgc00018166-02

129. Ncgc00018166-14

130. (1s,11s,14s,15s,10r)-5-hydroxy-15-methyltetracyclo[8.7.0.0<2,7>.0<11,15>]hepta Deca-2,4,6-trien-14-yl Pentanoate

131. Cas-979-32-8

132. Cpd000058346

133. Estradiol Valerate [usp Monograph]

134. B1506

135. Ditate-ds Component Estradiol Valerate

136. E0876

137. D01413

138. Ab00382980_15

139. Estradiol Valerate Component Of Ditate-ds

140. 979e328

141. A845765

142. Sr-01000003061

143. Q-201506

144. Q5401768

145. Sr-01000003061-3

146. 1,3,5(10)-estratrien-3,17beta-diol 17-valerate

147. Brd-k66766661-001-19-2

148. (17.beta.)-estra-1,3,5(10)-triene-3,17-diol 17-valerate

149. (17beta)-3-hydroxyestra-1(10),2,4-trien-17-yl Pentanoate

150. Estra-1,5(10)-triene-3,17-diol (17.beta.)-, 17-pentanoate

151. Estra-1,3,5(10)-triene-3,17-diol(17.beta.)-, 17-pentanoate

152. [(13s,17s)-3-hydroxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-17-yl] Pentanoate

153. [(8r,9s,13s,14s,17s)-13-methyl-3-oxidanyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-17-yl] Pentanoate

154. Pentanoic Acid [(8r,9s,13s,14s,17s)-3-hydroxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-17-yl] Ester

2.4 Create Date
2005-03-26
3 Chemical and Physical Properties
Molecular Weight 356.5 g/mol
Molecular Formula C23H32O3
XLogP36
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count3
Rotatable Bond Count5
Exact Mass356.23514488 g/mol
Monoisotopic Mass356.23514488 g/mol
Topological Polar Surface Area46.5 Ų
Heavy Atom Count26
Formal Charge0
Complexity518
Isotope Atom Count0
Defined Atom Stereocenter Count5
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count1
4 Drug and Medication Information
4.1 Drug Information
1 of 4  
Drug NameDelestrogen
PubMed HealthEstradiol (Injection)
Drug ClassesEndocrine-Metabolic Agent, Musculoskeletal Agent
Drug LabelDELESTROGEN (estradiol valerate injection, USP) contains estradiol valerate, a long-acting estrogen in sterile oil solutions for intramuscular use. These solutions are clear, colorless to pale yellow. Formulations (per mL): 10 mg estradiol valerate...
Active IngredientEstradiol valerate
Dosage FormInjectable
RouteInjection
Strength20mg/ml; 40mg/ml; 10mg/ml
Market StatusPrescription
CompanyPar Sterile Products

2 of 4  
Drug NameEstradiol valerate
Drug LabelEstradiol valerate injection, USP contains estradiol valerate, a long-acting estrogen in sterile oil solutions for intramuscular use. These solutions are clear, colorless to pale yellow. Formulations (per mL): 10 mg estradiol valerate in a vehicle co...
Active IngredientEstradiol valerate
Dosage FormInjectable
RouteInjection
Strength20mg/ml; 40mg/ml; 10mg/ml
Market StatusPrescription
CompanyLuitpold; Sandoz

3 of 4  
Drug NameDelestrogen
PubMed HealthEstradiol (Injection)
Drug ClassesEndocrine-Metabolic Agent, Musculoskeletal Agent
Drug LabelDELESTROGEN (estradiol valerate injection, USP) contains estradiol valerate, a long-acting estrogen in sterile oil solutions for intramuscular use. These solutions are clear, colorless to pale yellow. Formulations (per mL): 10 mg estradiol valerate...
Active IngredientEstradiol valerate
Dosage FormInjectable
RouteInjection
Strength20mg/ml; 40mg/ml; 10mg/ml
Market StatusPrescription
CompanyPar Sterile Products

4 of 4  
Drug NameEstradiol valerate
Drug LabelEstradiol valerate injection, USP contains estradiol valerate, a long-acting estrogen in sterile oil solutions for intramuscular use. These solutions are clear, colorless to pale yellow. Formulations (per mL): 10 mg estradiol valerate in a vehicle co...
Active IngredientEstradiol valerate
Dosage FormInjectable
RouteInjection
Strength20mg/ml; 40mg/ml; 10mg/ml
Market StatusPrescription
CompanyLuitpold; Sandoz

4.2 Drug Indication

Estradiol valerate is commercially available as an intramuscular injection as the product Delestrogen and is indicated for the treatment of moderate to severe vasomotor symptoms and vulvovaginal atrophy due to menopause, for the treatment of hypoestrogenism due to hypogonadism, castration or primary ovarian failure, and for the treatment of advanced androgen-dependent carcinoma of the prostate (for palliation only). Estradiol valerate is also available in combination with [DB09123] as the commercially available product Natazia used for the prevention of pregnancy and for the treatment of heavy menstrual bleeding.


FDA Label


5 Pharmacology and Biochemistry
5.1 Pharmacology

Estrogen mediates its effects across the body through potent agonism of the Estrogen Receptor (ER), which is located in various tissues including in the breasts, uterus, ovaries, skin, prostate, bone, fat, and brain. Estradiol binds to both subtypes of the Estrogen Receptor: Estrogen Receptor Alpha (ER) and Estrogen Receptor Beta (ER). Estradiol also acts as a potent agonist of G Protein-coupled Estrogen Receptor (GPER), which has recently been recognized as a major mediator of estradiol's rapid cellular effects.


5.2 MeSH Pharmacological Classification

Estrogens

Compounds that interact with ESTROGEN RECEPTORS in target tissues to bring about the effects similar to those of ESTRADIOL. Estrogens stimulate the female reproductive organs, and the development of secondary female SEX CHARACTERISTICS. Estrogenic chemicals include natural, synthetic, steroidal, or non-steroidal compounds. (See all compounds classified as Estrogens.)


5.3 FDA Pharmacological Classification
5.3.1 Pharmacological Classes
Estrogen Receptor Agonists [MoA]; Estrogen [EPC]; Estradiol Congeners [CS]
5.4 Absorption, Distribution and Excretion

Absorption

IM Injection: When conjugated with aryl and alkyl groups for parenteral administration, the rate of absorption of oily preparations is slowed with a prolonged duration of action, such that a single intramuscular injection of estradiol valerate or estradiol cypionate is absorbed over several weeks. Natazia: After oral administration of estradiol valerate, cleavage to 17-estradiol and valeric acid takes place during absorption by the intestinal mucosa or in the course of the first liver passage. This gives rise to estradiol and its metabolites, estrone and other metabolites. Maximum serum estradiol concentrations of 73.3 pg/mL are reached at a median of approximately 6 hours (range: 1.512 hours) and the area under the estradiol concentration curve [AUC(024h)] was 1301 pgh/mL after single ingestion of a tablet containing 3 mg estradiol valerate under fasted condition on Day 1 of the 28-day sequential regimen.


Route of Elimination

Estradiol, estrone and estriol are excreted in the urine along with glucuronide and sulfate conjugates.


5.5 Metabolism/Metabolites

Exogenous estrogens are metabolized using the same mechanism as endogenous estrogens. Estrogens are partially metabolized by cytochrome P450.


5.6 Mechanism of Action

Estradiol enters target cells freely (e.g., female organs, breasts, hypothalamus, pituitary) and interacts with a target cell receptor. When the estrogen receptor has bound its ligand it can enter the nucleus of the target cell, and regulate gene transcription which leads to formation of messenger RNA. The mRNA interacts with ribosomes to produce specific proteins that express the effect of estradiol upon the target cell. Estrogens increase the hepatic synthesis of sex hormone binding globulin (SHBG), thyroid-binding globulin (TBG), and other serum proteins and suppress follicle-stimulating hormone (FSH) from the anterior pituitary. Increases in the down-stream effects of ER binding reverses some of the symptoms of menopause, which are primarily caused by a loss of estrogenic activity.