Estriol supplier | CasNO.50-27-1

Name
Estriol
EINECS 200-022-2
CAS No. 50-27-1
Article Data44
CAS DataBase
Density 1.255 g/cm³
Solubility 3.2mg/L(25 oC)
Melting Point 280-282 °C(lit.)
Formula C₁₈H₂₄O₃
Boiling Point 469 °C at 760 mmHg
Molecular Weight 288.387
Flash Point 220.8 °C
Transport Information
Appearance White crystalline powder
Safety 53-22-36/37/39-45-36/37
Risk Codes 60-61-40-45
Molecular Structure
Hazard Symbols T
Synonyms 1,3,5-Oestratriene-3beta,16alpha,17beta-triol;NSC-12169;1,3,5(10)-Estratriene-3,16-alpha,17beta-triol;(16.alpha.,17.beta.)-Oestra-1,3,5(10)-triene-3,16,17-triol;16.alpha.-Hydroxyestradiol;16.alpha.,17.beta.-Estriol;1,3,5-Estratriene-3beta,16alpha,17beta-triol;1,3, 5(10)-Estratriene-3,16.alpha., 17.beta.-triol;Estra-1,3,5(10)-triene-3,16,17-triol,(16R,17a)-;Estra-1,3,5(10)-trien-3, 16.alpha., 17.beta.-triol;16-alpha-Hydroxyoestradiol;16.alpha.-Estriol;16alpha-Hydroxy-17beta-estradiol;Triovex;Ovestrion;Oestra-1,3,5(10)-triene-3,16alpha,17beta-triol;3, 16.alpha.,17.beta.-Estriol;Synapause;Klimoral;Folicular hormone;16-alpha-Hydroxyestradiol;3,16.alpha., 17.beta.-Trihydroxy-1,3,5(10)-estratriene;Hemostyptanon;Estra-1,3,5(10)-triene-3,16,17-triol, (16alpha,17beta)-;Estra-1,3,5(10)-trien-3,16alpha,17beta-triol;Estriolo [Italian];Tridestrin;Estra-1,3,5(10)-trien-3,16.alpha., 17.beta.-triol;3,16-alpha,17-beta-Oestriol;3,16-alpha,17-beta-Estriol;Oestra-1,3,5(10)-triene-3,16.alpha., 17.beta.-triol;Aacifemine;16.alpha.,17.beta.-Oestriol;Deuslon-A;Oestratriol;3,16alpha,17beta-Trihydroxy-1,3,5(10)-estratriene;3,16.alpha., 17.beta.-Trihydroxy-.delta.-1,3,5-oestratriene;16.alpha.-Hydroxyoestradiol;3,16alpha,17beta-Trihydroxy-delta-1,3,5-oestratriene;A 13610;Oestriolum;Trihydroxyoestrin;Holin V;Thulol;Triodurin;Orestin;Estra-1,3,5(10)-triene-3,16.alpha.,17.beta.-triol;Oestriol [Steroidal oestrogens];Overstin;Orgastyptin;Ovestin;Estriel;(16alpha,17beta)-estra-1,3,5(10)-triene-3,16,17-triol;Theelol;Stiptanon;(16alpha,17beta)-Oestra-1,3,5(10)-triene-3,16,17-triol;
PSA 60.69000
LogP 2.58000

Synthetic route

: 79258-14-3
2,4-dibromo-3,16α-dihydroxy-1,3,5(10)-estratrien-17-one

: 50-27-1
Estriol

Conditions

Conditions	Yield
With sodium tetrahydroborate; palladium dichloride In methanol at 0℃; for 2h;	96%
With sodium borodeuteride; palladium dichloride In deuteromethanol at 0℃; for 1h;	92%
Multi-step reaction with 4 steps 1: 85 percent / Ag2CO3 / benzene / 72 h / Ambient temperature 2: 95 percent / NaBH4, PdCl2 / methanol / 2 h / 0 °C 3: 65 percent / aq. 2M NaOH / methanol / Ambient temperature 4: 24 h / 38 °C / beef-liver β-glucuronidase, 0.1M acetate buffer (pH 4.6) View Scheme

: 566-76-7
16α-hydroxyestrone

: 50-27-1
Estriol

Conditions

Conditions	Yield
With methanol; sodium tris(acetoxy)borohydride In 1,4-dioxane at 20 - 25℃;	94%

: 123715-88-8
estra-1,3,5(10)-triene-3,16α,17β-triol 3-methoxyethyl ether

: 50-27-1
Estriol

Conditions

Conditions	Yield
With sec.-butyllithium In tetrahydrofuran; N,N-dimethyl-formamide at -78℃;	90%

: 53-16-7
Estrone

A: 50-28-2
estradiol

B: 50-27-1
Estriol

Conditions

Conditions	Yield
Isolierung aus dem Harn von Maennern nach Injektion von (+)-O-Acetyl-oestron;

: 1474-53-9
3-methoxy-estra-1,3,5(10)-triene-16α,17β-diol

: 50-27-1
Estriol

Conditions

Conditions	Yield
With hydrogen bromide; acetic acid

: 1247-71-8
3,16α-diacetoxy-1,3,5(10)-estratrien-17-one

: 50-27-1
Estriol

Conditions

Conditions	Yield
With lithium aluminium tetrahydride; diethyl ether; benzene

: 1247-71-8
3,16α-diacetoxy-1,3,5(10)-estratrien-17-one

A: 50-27-1
Estriol

B: 50-27-1, 547-81-9, 651-50-3, 793-89-5, 21610-95-7, 1228-72-4
17-epiestriol

Conditions

Conditions	Yield
With lithium aluminium tetrahydride; diethyl ether

: 69744-63-4
3,17β-diacetoxy-16α,17α-epoxy-estra-1,3,5(10)-triene

: 50-27-1
Estriol

Conditions

Conditions	Yield
With lithium aluminium tetrahydride; diethyl ether; benzene

: 472-57-1
3-Hydroxyestra-1,3,5(10)-triene 16β,17β-Oxide

A: 50-27-1
Estriol

B: 793-89-5
16,17-Epiestriol

Conditions

Conditions	Yield
With acetic acid Erwaermen des Reaktionsprodukts mit aethanol. KOH;

: 50-28-2
estradiol

A: 53-16-7
Estrone

B: 50-27-1
Estriol

C: 2487-49-2
3,7α-dihydroxy-estra-1,3,5(10)-trien-17-one

D: 1476-78-4
6α-hydroxyestrone

Conditions

Conditions	Yield
With disodium hydrogenphosphate; potassium dihydrogenphosphate; D-glucose; oxygen; sodium chloride; calcium chloride; magnesium chloride at 37℃; for 0.166667h; Kinetics; Product distribution; Mechanism; <6,7-3H>-labeled, metabolism in uterine tissue from 6 months old prepubertal pigs;

...Expand

: 53-16-7
Estrone

A: 50-28-2
estradiol

B: 50-27-1
Estriol

C: 2487-49-2
3,7α-dihydroxy-estra-1,3,5(10)-trien-17-one

D: 1476-78-4
6α-hydroxyestrone

Conditions

Conditions	Yield
With disodium hydrogenphosphate; potassium dihydrogenphosphate; D-glucose; oxygen; sodium chloride; calcium chloride; magnesium chloride at 37℃; for 0.166667h; Kinetics; Product distribution; <6,7-3H>-labeled, metabolism in uterine tissue from 6 months old prepubertal pigs;

...Expand

: 1852-44-4
sodium 3,17β-dihydroxyestra-1,3,5(10)-trien-16α-yl-β-D-glucopyranosuronate

: 50-27-1
Estriol

Conditions

Conditions	Yield
at 38℃; for 24h; beef-liver β-glucuronidase, 0.1M acetate buffer (pH 4.6);

: 99700-34-2
16α,17β,19-trihydroxyandrost-4-en-3-one

: 50-27-1
Estriol

Conditions

Conditions	Yield
for 1h; Mechanism; biosynthesis labelled with isotops;

: 99700-35-3
16α,17β-dihydroxyandrost-4-ene-3,19-dione

: 50-27-1
Estriol

Conditions

Conditions	Yield
for 0.5h; Mechanism; biosynthesis labelled with isotops;

: 2479-91-6
Estriol O3-glucuronide

A: 6556-12-3, 489-91-8, 528-16-5, 552-12-5, 577-46-8, 643-33-4, 2240-07-5, 6294-16-2, 10133-02-5, 18402-78-3, 18968-14-4, 21179-08-8, 23018-83-9, 33599-45-0, 33599-46-1, 46171-67-9, 46171-69-1, 46172-26-3, 70021-34-0, 71031-08-8, 104195-06-4, 106499-29-0, 124817-72-7
D-glucuronic acid

B: 50-27-1
Estriol

Conditions

Conditions	Yield
β-glucoronidase I In water at 37℃; for 0.166667h; Product distribution; substrate specifity of enzyme;
β-glucoronidase II In water at 37℃; for 0.166667h; Product distribution; substrate specifity of enzyme;

: 7219-89-8
3,16α-dihydroxy-1,3,5(10)-estratrien-17β-yl-β-D-glucopyranosiduronic acid

A: 6556-12-3, 489-91-8, 528-16-5, 552-12-5, 577-46-8, 643-33-4, 2240-07-5, 6294-16-2, 10133-02-5, 18402-78-3, 18968-14-4, 21179-08-8, 23018-83-9, 33599-45-0, 33599-46-1, 46171-67-9, 46171-69-1, 46172-26-3, 70021-34-0, 71031-08-8, 104195-06-4, 106499-29-0, 124817-72-7
D-glucuronic acid

B: 50-27-1
Estriol

Conditions

Conditions	Yield
β-glucoronidase II In water at 37℃; for 0.166667h; Product distribution; substrate specifity of enzyme;

: 1852-50-2
estriol-16α-D-glucoronide

A: 6556-12-3, 489-91-8, 528-16-5, 552-12-5, 577-46-8, 643-33-4, 2240-07-5, 6294-16-2, 10133-02-5, 18402-78-3, 18968-14-4, 21179-08-8, 23018-83-9, 33599-45-0, 33599-46-1, 46171-67-9, 46171-69-1, 46172-26-3, 70021-34-0, 71031-08-8, 104195-06-4, 106499-29-0, 124817-72-7
D-glucuronic acid

B: 50-27-1
Estriol

Conditions

Conditions	Yield
β-glucoronidase II In water at 37℃; for 0.166667h; Product distribution; substrate specifity of enzyme;

: 19590-54-6
2,4-dibromoestratriol

A: 50-27-1
Estriol

B: 99477-24-4
4-bromoestra-1,3,5(10)-triene-3,16α,17β-triol

Conditions

Conditions	Yield
With hydrogen; palladium on activated charcoal In ethanol Ambient temperature; Yield given;

: 50-28-2
estradiol

A: 5976-61-4, 72704-99-5
4-Hydroxyestradiol

B: 362-05-0
2-Hydroxyestradiol

C: 50-27-1
Estriol

Conditions

Conditions	Yield
With cytochrome P450 1A2; NADPH-generating system In phosphate buffer at 37℃; for 0.25h; pH=7.4; Enzyme kinetics; Further Variations:; Reagents; time; Oxidation;

...Expand

: 60-29-7
diethyl ether

: 69744-63-4
3,17β-diacetoxy-16α,17α-epoxy-estra-1,3,5(10)-triene

: 71-43-2
benzene

lithium alanate: lithium alanate

: 50-27-1
Estriol

...Expand

3,17β-dihydroxy-estratrien-(1,3,5(10))-one-(16): 3,17β-dihydroxy-estratrien-(1,3,5(10))-one-(16)

A: 50-27-1
Estriol

B: 547-81-9
epiestriol

Conditions

Conditions	Yield
With sodium amalgam; ethanol; acetic acid at 40℃;

: 64-17-5
ethanol

: 6199-65-1, 566-75-6
16-oxoestradiol

: 64-19-7
acetic acid

sodium-amalgam: sodium-amalgam

A: 50-27-1
Estriol

B: 547-81-9
epiestriol

Conditions

Conditions	Yield
at 40℃;

...Expand

: 53-16-7
Estrone

: 50-27-1
Estriol

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: cupric bromide / methanol / 32 h / Heating 2: 90 percent / pyridine, sodium hydroxide / H2O / 3 h / Ambient temperature 3: 96 percent / NaBH4, PdCl2 / methanol / 2 h / 0 °C View Scheme
Multi-step reaction with 6 steps 1: cupric bromide / methanol / 32 h / Heating 2: 90 percent / pyridine, sodium hydroxide / H2O / 3 h / Ambient temperature 3: 85 percent / Ag2CO3 / benzene / 72 h / Ambient temperature 4: 95 percent / NaBH4, PdCl2 / methanol / 2 h / 0 °C 5: 65 percent / aq. 2M NaOH / methanol / Ambient temperature 6: 24 h / 38 °C / beef-liver β-glucuronidase, 0.1M acetate buffer (pH 4.6) View Scheme
Multi-step reaction with 3 steps 1: cupric bromide / methanol / 24 h / Heating 2: 90 percent / pyridine, sodium hydroxide / H2O / 3 h / Ambient temperature 3: 96 percent / NaBH4, PdCl2 / methanol / 2 h / 0 °C View Scheme

: 18841-95-7
methyl 3,17β-dihydroxyestra-1,3,5(10)-trien-16α-yl-2,3,4-tri-O-acetyl-β-D-glucopyranosuronate

: 50-27-1
Estriol

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: 65 percent / aq. 2M NaOH / methanol / Ambient temperature 2: 24 h / 38 °C / beef-liver β-glucuronidase, 0.1M acetate buffer (pH 4.6) View Scheme

: 79258-13-2
methyl 1-O-<2,4-dibromo-3-hydroxy-17-oxo-estra-1,3,5(10)-trien-16α-yl>-2,3,4-tri-O-acetyl-β-D-glucopyranosiduronate

: 50-27-1
Estriol

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: 95 percent / NaBH4, PdCl2 / methanol / 2 h / 0 °C 2: 65 percent / aq. 2M NaOH / methanol / Ambient temperature 3: 24 h / 38 °C / beef-liver β-glucuronidase, 0.1M acetate buffer (pH 4.6) View Scheme

: 79258-15-4
2,4,16α-tribromo-3-hydroxy-1,3,5(10)-estratrien-17-one

: 50-27-1
Estriol

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: 90 percent / pyridine, sodium hydroxide / H2O / 3 h / Ambient temperature 2: 96 percent / NaBH4, PdCl2 / methanol / 2 h / 0 °C View Scheme
Multi-step reaction with 5 steps 1: 90 percent / pyridine, sodium hydroxide / H2O / 3 h / Ambient temperature 2: 85 percent / Ag2CO3 / benzene / 72 h / Ambient temperature 3: 95 percent / NaBH4, PdCl2 / methanol / 2 h / 0 °C 4: 65 percent / aq. 2M NaOH / methanol / Ambient temperature 5: 24 h / 38 °C / beef-liver β-glucuronidase, 0.1M acetate buffer (pH 4.6) View Scheme

: 20592-42-1
estra-1,3,5(10),16-tetraene-3,17-diol diacetate

: 50-27-1
Estriol

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: bromine 2: lithium alanate; diethyl ether / Erwaermen des Reaktionsprodukts mit aethanol. Kalilauge 3: acetic acid / Erwaermen des Reaktionsprodukts mit aethanol. KOH View Scheme
Multi-step reaction with 2 steps 1: peroxybenzoic acid; benzene 2: LiAlH4; diethyl ether; benzene View Scheme
Multi-step reaction with 3 steps 1: 3-chloro-benzenecarboperoxoic acid / ethyl acetate / 7 - 20 °C 2: water; sulfuric acid / 1,4-dioxane / 10 - 20 °C 3: sodium tris(acetoxy)borohydride; methanol / 1,4-dioxane / 20 - 25 °C View Scheme

: 1239-35-6
16α-bromo-3-hydroxy-1,3,5(10)-estratrien-17-one 3-acetate

: 50-27-1
Estriol

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: lithium alanate; diethyl ether / Erwaermen des Reaktionsprodukts mit aethanol. Kalilauge 2: acetic acid / Erwaermen des Reaktionsprodukts mit aethanol. KOH View Scheme

B-ipc-9-BBN: B-ipc-9-BBN

: 60-29-7
diethyl ether

: 53-16-7
Estrone

: 141-43-5
ethanolamine

: 75-07-0
acetaldehyde

: 50-27-1
Estriol

...Expand

: 50-27-1
Estriol

: 6199-65-1, 566-75-6
16-oxoestradiol

Conditions

Conditions	Yield
With 4-methyl-morpholine; 6C6H15P4CF3O3S(1-)2Ru(2+); acetone at 65℃; for 5h; Inert atmosphere; Sealed tube;	97%

: 50-27-1
Estriol

: 19590-54-6
2,4-dibromoestratriol

Conditions

Conditions	Yield
With N-Bromosuccinimide In N,N-dimethyl-formamide for 24h; Ambient temperature;	95%

: 50-27-1
Estriol

: 108-24-7
acetic anhydride

: 805-26-5
3,16α,17β-Estratriol 16,17-diacetate

Conditions

Conditions	Yield
With boron trifluoride diethyl etherate In tetrahydrofuran at 0℃; for 4h; Schlenk technique;	94%
With boron trifluoride diethyl etherate In tetrahydrofuran for 0.333333h; Ambient temperature; Yield given;

: 50-27-1
Estriol

: 108-24-7
acetic anhydride

: 2284-32-4
estriol triacetate

Conditions

Conditions	Yield
With pyridine for 24h; Ambient temperature;	93.2%
at 100℃;
With pyridine at 95℃;

: 137-43-9
Cyclopentyl bromide

: 50-27-1
Estriol

: 7732-18-5
water

: 1169-79-5
quinestradol

Conditions

Conditions	Yield
With potassium hydroxide In ethanol	90%

...Expand

: 1185733-70-3
2,2,2-trichloroethoxysulfuryl 2-methyl-3-methylimidazolium triflate

: 50-27-1
Estriol

: 1313434-26-2
C20H25Cl3O6S

Conditions

Conditions	Yield
With 1,8-diazabicyclo[5.4.0]undec-7-ene In dichloromethane; N,N-dimethyl-formamide at 20℃; for 0.1h; chemoselective reaction;	88%

: 50-27-1
Estriol

: 18162-48-6
tert-butyldimethylsilyl chloride

: 104202-84-8
16α-(tert-butyldimethylsilyloxy)-1,3,5(10)-estratrien-3,17β-diol

Conditions

Conditions	Yield
	82%

: 114615-82-6
tetrapropylammonium perruthennate

3,16α-Bis(dimethylthexylsilyl ether): 3,16α-Bis(dimethylthexylsilyl ether)

: 50-27-1
Estriol

: 566-76-7
16α-hydroxyestrone

Conditions

Conditions	Yield
In dichloromethane	76%

...Expand

: 627-42-9
2-chloroethyl methyl ether

: 50-27-1
Estriol

: 123715-88-8
estra-1,3,5(10)-triene-3,16α,17β-triol 3-methoxyethyl ether

Conditions

Conditions	Yield
With potassium carbonate; potassium iodide In N,N-dimethyl-formamide at 90 - 95℃; for 15h;	75%

: 50-27-1
Estriol

: 10199-89-0
NBD chloride

: (8R,9S,13S,14S,16R,17R)-13-Methyl-3-(7-nitro-benzo[1,2,5]oxadiazol-4-yloxy)-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene-16,17-diol

Conditions

Conditions	Yield
With 18-crown-6 ether; potassium carbonate In acetonitrile at 80℃; for 0.5h;	75%

: 50-27-1
Estriol

: 10β-Fluoro-3-oxo-1,4-estradien-16α,17β-diol

Conditions

Conditions	Yield
With Selectfluor In acetonitrile at 45℃; for 5h; Fluorination;	73%

: 50-27-1
Estriol

: 64-19-7
acetic acid

: 805-26-5
3,16α,17β-Estratriol 16,17-diacetate

Conditions

Conditions	Yield
With copper diacetate Heating;	60%

: 50-27-1
Estriol

: 65896-72-2
2,4-diiodoestra-1,3,5(10)-triene-3,16α,17β-triol

Conditions

Conditions	Yield
With ammonium hydroxide; iodine In tetrahydrofuran; methanol for 0.5h;	60%

: 50-27-1
Estriol

: 18162-48-6
tert-butyldimethylsilyl chloride

: (13S,16R,17R)-3,17-bis(tert-butyldimethylsilyloxy)-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-16-ol

Conditions

Conditions	Yield
With 1H-imidazole In N,N-dimethyl-formamide for 0.666667h;	58%

: 50-27-1
Estriol

: 108-24-7
acetic anhydride

: 17779-98-5
(16α,17β)-16,17-dihydroxyestra-1(10),2,4-trien-3-yl acetate

Conditions

Conditions	Yield
Stage #1: Estriol With sodium hydroxide In propan-1-ol for 0.166667h; Stage #2: acetic anhydride With potassium hydrogencarbonate In propan-1-ol	57%

: 50-27-1
Estriol

: 18162-48-6
tert-butyldimethylsilyl chloride

A: 134958-20-6
(13S,16R,17R)-3,16-bis(tert-butyldimethylsilyloxy)-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-ol

B: 185910-46-7
(8R,9S,13S,14S,16R,17R)-3,16,17-Tris-(tert-butyl-dimethyl-silanyloxy)-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene

Conditions

Conditions	Yield
With 1H-imidazole In N,N-dimethyl-formamide for 0.666667h; Inert atmosphere; Sealed tube;	A 49% B 49%

...Expand

: 50-27-1
Estriol

A: 99477-24-4
4-bromoestra-1,3,5(10)-triene-3,16α,17β-triol

B: 2-bromoestra-1,3,5(10)-triene-3,16α,17β-triol

Conditions

Conditions	Yield
With N-Bromosuccinimide In N,N-dimethyl-formamide for 24h; Ambient temperature;	A 34% B 37%

: 50-27-1
Estriol

: 2-Iodoestriol

Conditions

Conditions	Yield
With iodine; copper diacetate In acetic acid at 55℃; for 22h;	35%

: 50-27-1
Estriol

: (8S,9S,13S,14S,16R,17R)-2,4,10-triazido-16,17-dihydroxy-13-methyl-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-3-one

Conditions

Conditions	Yield
With Amberlyst A26-resin bound iodine azide In acetonitrile at 20℃; for 3.5h; Catalytic behavior; Inert atmosphere;	32%

: 6517-30-2
2-(α-bromoacetyl)-phenoxathiin

: 50-27-1
Estriol

: estriol 3-(2-α-acetylphenoxathiin) ether

Conditions

Conditions	Yield
With potassium hydroxide; 18-crown-6 ether In dichloromethane at 20℃;	17%

: 186581-53-3, 908094-01-9
diazomethane

: 50-27-1
Estriol

: 1474-53-9
3-methoxy-estra-1,3,5(10)-triene-16α,17β-diol

Conditions

Conditions	Yield
With methanol
With methanol; diethyl ether; chloroform

: 50-27-1
Estriol

: 53-16-7
Estrone

Conditions

Conditions	Yield
With potassium hydrogensulfate at 180 - 200℃; im Hochvakuum;

: 50-27-1
Estriol

: 76122-50-4, 91200-60-1, 91200-61-2
5ξ.10ξ-estranetriol-(3ξ.16α.17β)

Conditions

Conditions	Yield
With hydrogenchloride; platinum Hydrogenation;
With ethanol; nickel at 175℃; under 110326 Torr; Hydrogenation;

: 50-27-1
Estriol

: 1236-72-2
2-methoxyestriol

: 50-27-1
Estriol

: 521-81-3
3-hydroxy-16,17-seco-estra-1,3,5(10)-triene-16,17-dioic acid

Conditions

Conditions	Yield
With potassium hydroxide at 250 - 300℃;
With potassium hydroxide; water at 275℃;

Estriol Consensus Reports

IARC Cancer Review: Animal Limited Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 21 , 1979,p. 327.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Human Limited Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 21 , 1979,p. 327.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 6 , 1974,p. 117.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) .

Estriol Specification

1. Introduction of Estriol
Estriol Estriol is one of the three major naturally occurring estrogens. Its IUPAC Name is (8R,9S,13S,14S,16R,17R)-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-3,16,17-triol. Estriol is only produced in significant amounts during pregnancy as it is made by the placenta from 16-hydroxydehydroepiandrosterone sulfate (16-OH DHEAS), an androgen steroid made in the fetal liver and adrenal glands

2. Properties of Estriol
Index of Refraction: 1.624
Molar Refractivity: 81.09 cm³
Molar Volume: 229.6 cm³
Surface Tension: 53.8 dyne/cm
Density: 1.255 g/cm³
Flash Point: 220.8 °C
Enthalpy of Vaporization: 77.05 kJ/mol
Boiling Point: 469 °C at 760 mmHg
Vapour Pressure: 1.34E-09 mmHg at 25°C
XLogP3-AA: 2.5
H-Bond Donor: 3
H-Bond Acceptor: 3
Structure Descriptors of Estriol (CAS NO.50-27-1):

3. Structure Descriptors of Estriol
Canonical SMILES: CC12CCC3C(C1CC(C2O)O)CCC4=C3C=CC(=C4)O
Isomeric SMILES: C[C@]12CC[C@H]3[C@H]([C@@H]1C[C@H]([C@@H]2O)O)CCC4=C3C=CC(=C4)O
InChI: InChI=1S/C18H24O3/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/h3,5,8,13-17,19-21H,2,4,6-7,9H2,1H3/t13-,14-,15+,16-,17+,18+/m1/s1
InChIKey: PROQIPRRNZUXQM-ZXXIGWHRSA-N

4. Toxicity of Estriol

1.		cyt-ham:ovr 50 µmol/L		TOLED5 Toxicology Letters. 29 (1985),201.
2.		imp-gpg TDLo:20 mg/kg:ETA,TER		RBBIAL Revista Brasileira de Biologia. 5 (1945),1.

5. Safety Information of Estriol
Suspected carcinogen with experimental carcinogenic, neoplastigenic, tumorigenic, and teratogenic data. Other experimental reproductive effects. Mutation data reported. A steroid drug for the treatment of menopause. When heated to decomposition it emits acrid smoke and irritating fumes.
Hazard Codes : T (Toxic) Toxic

Risk Statements :
R60-61-40-45 (May impair fertility;May cause harm to the unborn child;Limited evidence of a carcinogenic effect;May cause cancer)
Safety Statements :
S53-22-36/37/39-45-36/37 (Avoid exposure - obtain special instruction before use;Do not breathe dust;Wear suitable protective clothing, gloves and eye/face protection;In case of accident or if you feel unwell, seek medical advice immediately (show label where possible);Wear suitable protective clothing and gloves)
WGK Germany : 3

6. Preparation of Estriol
Estriol is only produced in significant amounts during pregnancy as it is made by the fetal liver from 16-OHDHEAS, an androgen steroid made in the fetal adrenal glands.

7. Use of Estriol
According to researchers at UCLA's Geffen Medical School,In pregnant women with multiple sclerosis (MS), estriol reduces the disease's symptoms noticeably. Estriol can be measured in maternal blood or urine,then it can be used as a marker of fetal health and wellbeing. Estriol also can be used in the treatment of prostate disease,it also have certain curative effect for leukopenia and prostate hypertrophy.

Product Name

Estriol

Synthetic route

Estriol Consensus Reports

Estriol Specification

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