9,11-Didehydroestriol

Product Name: 9,11-Didehydroestriol
CAS No.: 246021-20-5
Chemical Name: 9,11-Didehydroestriol
Synonyms: Estriol derivative 1;Estriol EP Impurity A;9 11-DIDEHYDROESTRIOL;Estriol Related Compound A;Estriol USP Related Compound A;Conjugated Estrogens EP Impurity A;Estra-1,3,5(10),9(11)-tetraene-3,16;Estra-1,3,5,9(11)-tetraene-3,16a,17b-triol;estra-1,3,5,9(11)-tetraene-3,16α,17β-triol;Estriol Impurity 1 (Estriol EP Impurity A)
CBNumber: CB4502562
Molecular Formula: C18H22O3
Formula Weight: 286.37
MOL File: 246021-20-5.mol

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9,11-Didehydroestriol Property

Boiling point:: 491.9±45.0 °C(Predicted)
Density: 1.31±0.1 g/cm3(Predicted)
storage temp.: -10 to -25°C
solubility: DMSO (Slightly), Methanol (Slightly)
pka: 10.37±0.70(Predicted)
form: Solid
color: Off-White to Pale Yellow
Stability:: Hygroscopic
Major Application: pharmaceutical
InChI: 1S/C18H22O3/c1-18-7-6-13-12-5-3-11(19)8-10(12)2-4-14(13)15(18)9-16(20)17(18)21/h3,5-6,8,14-17,19-21H,2,4,7,9H2,1H3/t14-,15+,16-,17+,18+/m1/s1
InChIKey: ZWHFPHWLYUMTGY-WKULXVSPSA-N
SMILES: O[C@@H]1[C@@]2([C@H]([C@@H]3CCc4c(ccc(c4)O)C3=CC2)C[C@H]1O)C

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Safety

Hazard Codes: Xn
Risk Statements: 62-63
Safety Statements: 36/37
WGK Germany: 3
F: 10
HS Code: 2937230000
Storage Class: 3 - Flammable liquids
Hazard Classifications: Acute Tox. 3 Dermal
Acute Tox. 3 Inhalation
Acute Tox. 3 Oral
Flam. Liq. 2
STOT SE 1

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word: Warning
Hazard statements: H361Suspected of damaging fertility or the unborn child
Precautionary statements: P280Wear protective gloves/protective clothing/eye protection/face protection.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: PHR8414
Product name: Estriol Related Compound A
Purity: certified reference material, pharmaceutical secondary standard
Packaging: 1 mL
Price: $432
Updated: 2026/03/19

Sigma-Aldrich

Product number: PHR8414
Product name: Estriol Related Compound A
Purity: certified reference material, pharmaceutical secondary standard
Packaging: 1 unit
Price: $400
Updated: 2025/07/31

TRC

Product number: D439538
Product name: 9,11-Didehydrooestriol
Packaging: 5mg
Price: $145
Updated: 2021/12/16

American Custom Chemicals Corporation

Product number: CCH0007624
Product name: 9,11-DIDEHYDROESTRIOL
Purity: 95.00%
Packaging: 5MG
Price: $502.57
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FD150546
Product name: 9,11-Didehydroestriol
Packaging: 100mg
Price: $2700
Updated: 2021/12/16

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9,11-Didehydroestriol Chemical Properties,Usage,Production

Uses

9,11-Didehydrooestriol (Estriol EP Impurity A) is an impurity of Estriol (E888960), a metabolite of Estradiol (E888000). An estrogenic metabolite considerably less potent than the hormone Estradiol (E888000).

9,11-Didehydroestriol Preparation Products And Raw materials

Raw materials

Preparation Products

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9,11-Didehydroestriol Suppliers

China 31 India 4 Switzerland 1 United Kingdom 1 United States 6 Global 43

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246021-20-5, 9,11-DidehydroestriolRelated Search:

Trichloroethylene Allylestrenol Estriol Altrenogest Estriol ELISA 9,11-Didehydroestriol

(8S,13S,14S,16R,17R)-13-methyl-6,7,8,12,14,15,16,17-octahydrocyclopenta[a]phenanthrene-3,16,17-triol

9 11-DIDEHYDROESTRIOL

estra-1,3,5,9(11)-tetraene-3,16α,17β-triol

Estra-1,3,5,9(11)-tetraene-3,16a,17b-triol

Conjugated Estrogens EP Impurity A

Estriol EP Impurity A

Estra-1,3,5(10),9(11)-tetraene-3,16

Estra-1,3,5(10),9(11)-tetraene-3,16,17-triol, (16α,17β)-

Estriol Impurity 1 (Estriol EP Impurity A)

Estriol Related Compound A

Estriol USP Related Compound A

Estriol derivative 1

Estriol EP Impurity A (Estriol USP Related Compound A)

Estra-1,3,5(10),9(11)-tetraene-3,16alpha,17beta-triol (9,11-Didehydroestriol)

(8S,13S,14S,16R,17R)-13-methyl-7,8,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthrene-3,16,17-triol

246021-20-5